# ThinkPad A series

The ThinkPad A series was a short lived line of mid to high end desktop replacements released from May 2000 to March 2002 by IBM as a successor to the ThinkPad 700 series, combining features present in the ThinkPad 300 series. It was discontinued in January 2004 in favor of R and G series ThinkPads. This is not to be confused with the newer ThinkPad A series released by Lenovo consisting of ThinkPad T and X series models with AMD processors.

## History

The ThinkPad A series (starting with A20m and A20p) was released as part of IBM's initiative in 2000 to revamp and streamline their lineup of laptops, following decreasing sales. This included an increasing focus on wireless connectivity, leading to the addition of optional wireless LAN and the option of Bluetooth connecting through the UltraPort, along with promoting internet usage, by offering online demonstrations, tips, and forums to provide user help and share experiences. Their revamping also included an increased focus on user experience, leading to classic ThinkPad features such as the ThinkLight, dedicated volume buttons, and ThinkPad button(later the ThinkVantage button). Naming wise, their streamlining involved the shift from a three number scheme to a system with a letter followed by two numbers. Meaning that instead of having a number in front to denote what series of ThinkPad a specific model belongs to, a letter was used instead. Otherwise, the last two numbers of both systems served generally the same purpose with the middle character indicating the generation and the last number distinguishing different revisions. Just like the previous naming scheme, letter suffixes can be added to the end of the model number to signify types of the model it is attached to.
Starting with the A20m and A20p, the ThinkPad A series was released to acclaim alongside the ThinkPad T series as its powerful, larger sibling. Being described as "a stellar choice for small or large businesses" that "trades portability for power" by CNET in 2002 while reviewing the A3x series. It offered little compromise when compared to the T series both in the case construction, boasting titanium composite lids, and in the keyboard, offering sturdy and responsive keyboards with 2.7mm of travel, being rated as "a cut above anything you'll find elsewhere, except on some Dell notebooks" by CNET in the same review. The A20m was also one of the first laptops to offer a Intel Celerons in a 15" form factor, leading to 15" displays being more accessible than before.
The A series wasn't simply a larger version of the T series either. As a desktop replacement, the A series offered many additional features not available on the T series such as a third line-in audio jack, 4-pin FireWire, floppy drive, and more powerful GPU options. It also had both larger and high resolution IPS screens, a second UltraBay, and web navigation keys on the left of the keyboard, features that no other ThinkPad at the time had. While the web navigation keys were never present on any other ThinkPad released, those high resolution IPS screens, with drastically greater viewing angles and marketed as "Flexview", were added as an option for future ThinkPads of other models. Which lead to ThinkPads of this time being known for their great displays.
Battery configuration
| Main | M(x) | Main hot-swappable (max.cells) | Secondary | U | Ultrabay removable |
| Main | M(x) | Main hot-swappable (max.cells) | Secondary | u | Ultrabay unremovable |
| Main | M(x) | Main removable (max.cells) | Secondary | m(x) | internal (max.cells) "PowerBridge" |
| Main | m(x) | Main internal (max.cells) | Secondary | S | Slice battery |
Laptop color codes :
| PCIe 4.0 x4 | PCIe 3.0 x4 | PCIe 3.0 x2 | M.2 SATA | mSATA | 1.8" SATA | 2.5" SATA | 1.8" IDE | 2.5" IDE |
| 2019 Not yet (laptops) | 2013 | 2013 | 2013 | 2009 | 2003 | 2003 | 1991 | 1988 |
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| Amount | LPDDR5X | LPDDR5 | DDR5 | LPDDR4X | LPDDR4 | DDR4 | LPDDR3 | DDR4 | DDR3L | DDR3L | DDR3 | DDR3 | DDR2 | DDR2 | DDR | SDR | EDO | FPM |
| Amount | | | | | | dual channel | | < dual channel | dual channel | < dual channel | dual channel | < dual channel | dual channel | < dual channel | | | | |
| Amount | 2022 (laptops) | 2019 (laptops) | 2020 | 2017 | 2014 | 2014 | 2012 | 2014 | 2010 | 2010 | 2007 | 2007 | 2003 | 2003 | 1998 | 1993 | 1993 | 1987 |
| max memory = 512 GB | N/A | N/A | 512 GB | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| max memory = 256 GB | N/A | | 256 GB (4 slots) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| max memory = 128 GB | 128 GB | | 128 GB | N/A | N/A | 128 GB (4 slots) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 64 GB ≤ max memory < 128 GB | | 64 GB | | N/A | N/A | 64 GB | N/A | 64 GB (2 slots) | 64 GB (4 slots) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 32 GB ≤ max memory < 64 GB | | | | 32 GB | 32 GB | 32 GB | N/A | | 32 GB | 32 GB (2 slots) | 32 GB (4 slots) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 16 GB ≤ max memory < 32 GB | | | | | | 16 GB | 16 GB | | 16 GB | | 16 GB | 16 GB (2 slots) | 16 GB (4 slots) | N/A | N/A | N/A | N/A | N/A |
| 8 GB ≤ max memory < 16 GB | | | | | | 8 GB | | | 8 GB | | 8 GB | | 8 GB | 8 GB (2 slots) | 8 GB (4 slots) | N/A | N/A | N/A |
| 4 GB ≤ max memory < 8 GB | | | | | | 4 GB | | | 4 GB | | 4 GB | | 4 GB | | 4 GB | 4 GB (4 slots) | 4 GB (4 slots) | N/A |
| 2 GB ≤ max memory < 4 GB | | | | | | 2 GB (8 chips) | | | 2 GB | | 2 GB | | 2 GB | | | 2 GB | 2 GB | N/A |
| 1 GB ≤ max memory < 2 GB | | | 1 GB (1 chip) | dual channel min | dual channel min | N/A | | single channel min | 1 GB | | 1 GB | | 1 GB | | | | | 1 GB (4 slots) |
| 512 MB ≤ max memory < 1 GB | N/A | N/A | N/A | single channel min | single channel min | N/A | dual channel min | half channel min | 512 MB (8 chips) | | 512 MB (8 chips) | | 512 MB | | | | | 512 MB |
| 256 MB ≤ max memory < 512 MB | N/A | N/A | N/A | 256 MB (1 chip) | 256 MB (1 chip) | N/A | single channel min | 256 MB (1 chip) | N/A | single channel min | N/A | single channel min | 256 MB | | | | | |
| 128 MB ≤ max memory < 256 MB | N/A | N/A | N/A | N/A | N/A | N/A | 128 MB (1 chip) | N/A | N/A | half channel min | N/A | half channel min | | | | | | |
| 64 MB ≤ max memory < 128 MB | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 64 MB (1 chip) | N/A | 64 MB (1 chip) | | | | | | |
| max memory < 64 MB | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | | | | | | |
IBM ThinkPad A series 2000–2004 :
| Case | Screen | Type | A2x | A2x | A2x | A3x | A3x |
| 14" | 12.1" | Low Cost | A20m | A21e | | Replaced by ThinkPad R series | Replaced by ThinkPad R series |
| 14" | 12.1" | Low Cost | A20m | A21m | A22m | Replaced by ThinkPad R series | Replaced by ThinkPad R series |
| 14" | 13.3" | Low Cost | | A21e | A22e | Replaced by ThinkPad R series | Replaced by ThinkPad R series |
| 14" | 14.1" | Low Cost | | A21e | A22e | Replaced by ThinkPad R series | Replaced by ThinkPad R series |
| 14" | 14.1" | Mainstream | A20m | A21m | A22m | Replaced by ThinkPad R series | Replaced by ThinkPad R series |
| 15" | 14.1" | Low Cost | | | | A30 | A31 |
| 15" | 15" | Low Cost | A20m | A21e | | | |
| 15" | 15" | Mainstream | A20m | A21m | A22m | A30 | A31 |
| 15" | 15" | Performance | A20p | A21p | A22p | A30p | A31p |

## A2x (2000-2001)
### A20m

The ThinkPad A20m was released in 2000 as a successor to the ThinkPad 770. It was released alongside the A20p and was meant to be both the lower cost and mainstream option of the A series. A carbon fiber case similar to the one in the ThinkPad 240 and 600 series was used to maintain stiffness while keeping the laptop somewhat light.
It came in two body types with 3 display sizes. The 14" body type was able to be fitted with either a 12.1" SVGA(800x600) or a 14.1" XGA(1024x768) display. The 15" body type could only be optioned with a 15" XGA(1024x768) display.

### A20p

The ThinkPad A20p was released as the high end version of the A20m. It sported a titanium lid similar to the T20 released around the same time, a higher capacity battery, an UltraPort, higher resolution displays, and more performant CPUs and GPUs when compared to the A20m.
The A20p was only available in the 15" body type with a 15" SXGA+(1400x1050) display.

### A21e

The ThinkPad A21e was released starting at $1499 and was aimed at "budget-conscious business users".
It had features cut out, including the ability to dock to the full sized ThinkPad Dock, was made of ABS plastic, had a lower end 440MX chipset that couldn't handle as much RAM, did not have battery terminals nor the ability to hot or warm swap in the UltraBay, and couldn't support more than one PCMCIA card.
Through the A21e's lifetime, two types of it were released. One, released in October 2000, was based on the A21m. In Japan only, there were versions of this type of A21e made called the ThinkPad i Series 1800.
The A21m based model was available in two both 14" and 15" body types. The 14" body type housed either a 12.1" SVGA(800x600) or a 14.1" XGA(1024x768) display. The 15" body type was only available with a 15" XGA(1024x768) display.
The other was a smaller model released in March 2001 and didn't have a 1.44MB floppy drive or upgradeable CPUs. This was the model that the A22e would revise on. The i series 1800 would also be updated to be based on this newer model of the A21e.
The newer model was only offered in the 14" body type which could house 12.1", 13.3", or 14.1" displays. the 12" display was SVGA(800x600) while the 13" and 14" displays were XGA(1024x768).

### A21m

The ThinkPad A21m was released as a revision of the A20m with faster CPUs.
It came in two body types with 3 display sizes. The 14" body type was able to be fitted with either a 12.1" SVGA(800x600) or a 14.1" XGA(1024x768) display. The 15" body type could only be optioned with a 15" XGA(1024x768) display.

### A21p

The ThinkPad A21p was released as a revision of the A20p with faster CPUs and higher resolution displays. PCWorld gave the A21p a score of 89, rating it the best "Power Notebook" due to its chart topping performance. In the main review of the laptop, they noted its high resolution screen and high-speed mobile Pentium III processor, calling it the "Lexus of portables".
The A21p was only available in the 15" body type with a 15" UXGA(1600x1200) display.

### A22e

The ThinkPad A22e was released in June 2001 and was a revision on the newer version of the A21e. A new version of i series 1800 was released based on the A22e as well. This would be the last A series with an -e suffix as the R series took up the job of being the low cost lineup of Laptops.
The A22e was only offered in the 14" body type which could either house a 13.3" or a 14.1" XGA(1024x768) display.

### A22m

The ThinkPad A22m was released as a revision of the A21m with faster CPUs. While other A series models supported wireless LAN, it was the first A series model to have the option of wireless LAN connectivity from the factory. It was given the Editor's Choice Award from ZDNet in 2001 and was the best rated out of the 7 other "AV notebooks" reviewed, being fast with excellent build quality. The smaller 14" body type from the mainstream Axxm linup of desktop replacements would be succeeded by the R series.
It came in two body types with 3 display sizes. The 14" body type was able to be fitted with either a 12.1" SVGA(800x600) or a 14.1" XGA(1024x768) display. The 15" body type could only be optioned with a 15" XGA(1024x768) display.

### A22p

The ThinkPad A22p was released as a revision of the A21p with faster CPUs. In a review in 2001, Bloomberg called it the Lexus among portables due to it "[teaming] great design with top-shelf components, as well as a screen resolution of 1600 by 1200, the highest available for notebooks".
The A21p was only available in the 15" body type with a 15" UXGA(1600x1200) display.

### Specifications

| Model | Release (US) | Dimensions $^{(w,d,h)}$ | Weight $^{(min)}$ | CPU | Chipset | Memory $^{(max)}$ | Graphics | Storage | Networking | Screen | Battery | Other |
| A20m (14") | May 2000 | 317 x 268 x 43.3mm (12.48 x 10.53 x 1.7") | 2.9 kg (6.4 lb) | Intel Mobile Celeron or Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 12.1" SVGA(800x600), or 14.1" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A20m (15") | May 2000 | 329 x 268 x 44.7mm (12.95 x 10.53 x 1.76") | 3.1 kg (6.8 lb) | Intel Mobile Celeron or Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 15.0" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A20p | May 2000 | 329 x 268 x 44.7mm (12.95 x 10.53 x 1.76") | 3.45 kg (7.6 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility 128 $^{(16MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56k modem $^{inCommunicationsBay}$ | 15.0" SXGA+(1400x1050) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ One UltraPort |
| A21e (14") (Original) | Oct 2000 | 317 x 267.5 x 43.3mm (12.48 x 10.53 x 1.7") | 3.0 kg (6.6 lb) | Intel Mobile Celeron FSB: 100MT/s | Intel 440MX | 256MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,PCI)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 12.1" SVGA(800x600), or 14.1" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicator}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A21e (15") (Original) | Oct 2000 | 329 x 268 x 44.7mm (12.95 x 10.53 x 1.76") | 3.3 kg (7.3 lb) | Intel Mobile Celeron FSB: 100MT/s | Intel 440MX | 256MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,PCI)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 15.0" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicator}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A21e (Refresh) | Mar 2001 | 305 x 254 x 35.6mm (12.0 x 10.4 x 1.4") | 2.59 kg (5.7 lb) | Intel Mobile Celeron FSB: 100MT/s | Intel 440MX | 256MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,PCI)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 12.1" SVGA(800x600), or 13.3" XGA(1024x768) or 14.1" XGA(1024x768) TN TFT LCD | M(6) | One White ThinkLight Supports $^{ThinkPadPortReplicator}$ |
| A21m (14") | Sep 2000 | 317 x 267.5 x 43.3mm (12.48 x 10.53 x 1.7") | 2.9 kg (6.4 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 12.1" SVGA(800x600), or 14.1" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A21m (15") | Sep 2000 | 329 x 267.5 x 44.7mm (12.95 x 10.53 x 1.76") | 3.1 kg (6.8 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 15.0" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A21p | Sep 2000 | 329 x 268 x 44.7mm (12.95 x 10.53 x 1.76") | 3.45 kg (7.6 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility 128 $^{(16MBSGRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ | 15.0" UXGA(1600x1200) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ One UltraPort |
| A22e | Jun 2001 | 305 x 254 x 35.6mm (12.0 x 10.4 x 1.4") | 2.59 kg (5.7 lb) | Intel Mobile Celeron FSB: 100MT/s | Intel 440MX | 256MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,PCI)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem $^{inCommunicationsBay}$ | 13.3" XGA(1024x768) or 14.1" XGA(1024x768) TN TFT LCD | M(6) | One White ThinkLight Supports $^{ThinkPadPortReplicator}$ |
| A22m (14") | Apr 2001 | 317 x 267 x 45.7mm (12.5 x 10.5 x 1.8") | 3.1 kg (6.8 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ Optional 802.11b Wireless LAN $^{inPC-Cardslot}$ | 12.1" SVGA(800x600), or 14.1" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A22m (15") | Apr 2001 | 330 x 267 x 45.7mm (13.0 x 10.5 x 1.8") | 3.1 kg (6.8 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility M $^{(4MBSDRAM,AGP2X)}$ or M1 $^{(8MBSDRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem or 3Com 10/100 Ethernet with 3Com or Lucent 56K modem $^{inCommunicationsBay}$ Optional 802.11b Wireless LAN $^{inPC-Cardslot}$ | 15.0" XGA(1024x768) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ |
| A22p | Apr 2001 | 335.8 x 271.8 x 45.7mm (13.2 x 10.7 x 1.8") | 3.5 kg (7.7 lb) | Intel Mobile Pentium III FSB: 100MT/s | Intel 440BX | 512MB $^{(2xPC-100SDRSO-DIMM)}$ | ATI Rage Mobility 128 $^{(16MBSGRAM,AGP2X)}$ | One UltraBay 2000, One 2.5" IDE | Lucent 56K modem or Intel 10/100 Ethernet with Xircom1 56K modem $^{inCommunicationsBay}$ | 15.0" UXGA(1600x1200) TN TFT LCD | M(9) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One 3.5" 1.44MB Floppy drive $^{(Unremovable)}$ One UltraPort |

## A3x (2001-2004)
### A30

The ThinkPad A30 was released in October 2001 alongside the ThinkPad R Series, the laptop line that replaced the lower cost lines of the A series. This was reflected in the positioning of the A series in IBM's lineup shifting from "Desktop alternatives covering a rage of performance and functionalities" to "High-performance desktop alternatives with exceptional versatility".
It, along with the ThinkPad R30 released at the same time, started the era of ThinkPad design of a cut corner on the left side back side with thin, exposed metal hinges, along with the introduction of page left and right keys which, along with the function row keys were colored in grey. This design was later brought to the T30 and the X3x series in 2002. While the cut corner and the grey color accents would only last in ThinkPad design until 2003 and 2005 respectively, the exposed metal hinges along with the blue enter key and the page left/right keys would stay with ThinkPads for much longer. The changes to the A series were not all positive though. In place of the carbon fiber construction of the Axxm series, ABS plastic lids and glass fiber reinforced plastic bottoms were used instead on the A30.
Being a desktop replacement, the laptop featured not just one but two UltraBays, One Ultrabay 2000 on the left side and another Ultrabay Plus on the right. The Ultrabay Plus could be used for floppy, SuperDisk, ZIP, CD, or DVD drives just like an Ultrabay 2000, or for expanding other device functions such as adding a numpad or a cradle for the IBM WorkPad PDA. Not only were there two UltraBays, there were two Communication Daughter Card slots that could house either 56K modem cards or 10/100 Ethernet cards. It also included six web navigation keys on the left side of the keyboard, three of which were preprogramed while the other three were user programmable.
The A30 was available with 3 display options: a 14.1" XGA(1024x768), a 15.0" XGA(1024x768), or a 15.0" SXGA+(1400x1050), all of which were TN displays.

### A30p

The ThinkPad A30p was the performance version of the A30, released at the same time. Based on the same chassis, the differences are mostly internal, with the only exterior differences being the inclusion of the UltraPort. However, the differences internally are drastic, not only is the unit more secure with the IBM Embedded Security Subsystem and more powerful in both processing power and graphics performance, it also features a high resolution, UXGA(1600x1200), IPS display—one of the first on a laptop.
The A30p came only with a UXGA(1600x1200) 15.0" IPS display.

### A31

The ThinkPad A31 was a revision to the ThinkPad A30 with mobile Pentium 4-M processors, DDR RAM, and faster ATI Mobility Radeon 7500 graphics. It was described as having a "knockout feature set" and being a "good choice for users who want a bit of portability without breaking the bank" by PCMag in a 2002 review.
The A31 was available with 3 display options: a 14.1" XGA(1024x768), a 15.0" XGA(1024x768), or a 15.0" SXGA+(1400x1050), all of which were TN displays.

### A31p

The ThinkPad A31p was a revision on the A30p and the performance version of the A31. Described as not just a desktop replacement but a workstation replacement by PCMag in 2002, It was updated with the ATI Mobility FireGL 7800, Pentium 4-M processors, and DDR RAM. Continuing to use IPS display technology, the A31p's screen was described to "remain crisp even to viewers sitting at extreme angles."
The ThinkPad A31p was the successor to the 760XD in the International Space Station. They were sent to the ISS starting in 2003 and stayed in use for six years until 2009 when the ThinkPad T61p replaced it.
The A31p came only with a UXGA(1600x1200) 15.0" IPS display.

#### A31p in Space

* ISS-20 Gennady Padalka trains the relocation of the Soyuz TMA-14 spacecraft in the Zvezda Service Module
* View of the ThinkPad A31p on the Middeck (MDDK) of the orbiter Endeavour during the STS-126 mission
* View of data on a Thinkpad A31p as used by the STS-126 crew during separation from the International Space Station (ISS)
* View of a Thinkpad A31p on the aft flight deck (FD) of the orbiter Endeavour during Flight Day 3 (FD3) rendezvous operations (OPS)
* View of two A31p's on the shuttle Endeavour aft Flight Deck. The shuttle Thermal Protection System (TPS) tiles are visible on the screen. Photo taken during a focused inspection of the TPS tiles.

### Specifications

| Model | Release (US) | Dimensions $^{(w,d,h)}$ | Weight $^{(min)}$ | CPU | Chipset | Memory $^{(max)}$ | Graphics | Storage | Networking | Screen | Battery | Other |
| A30 | Oct 2001 | 330mm x 272mm x 45.8mm (13 x 10.7 x 1.8") | 3.27 kg (7.2 lb) | Intel Mobile Pentium III-M $^{(Tutalin)}$ FSB: 133MT/s | Intel 830MP | 1GB $^{(2xPC-133SDRSO-DIMM)}$ | ATI Mobility Radeon 7000 $^{(16MBDDR-SDRAM,AGP4X)}$ | One UltraBay Plus, One UltraBay 2000, One 2.5" IDE | Optional Intel 82562ET 10/100 Ethernet $^{inCDC1slot}$ Optional 802.11b Wireless LAN with Lucent 56K modem or Lucent 56K modem $^{inCDC2slot(Exclusive)}$ | 14.1" XGA(1024x768) or 15.0" XGA(1024x768) or 15.0" SXGA+(1400x1050) TN TFT LCD | M(6) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ |
| A30p | Oct 2001 | 330mm x 272mm x 45.8mm (13 x 10.7 x 1.8") | 3.45 kg (7.6 lb) | Intel Mobile Pentium III-M $^{(Tutalin)}$ FSB: 133MT/s | Intel 830MP | 1GB $^{(2xPC-133SDRSO-DIMM)}$ | ATI Mobility Radeon 7000 $^{(32MBDDR-SDRAM,AGP4X)}$ | One UltraBay Plus, One UltraBay 2000, One 2.5" IDE | Optional Intel 82562ET 10/100 Ethernet $^{inCDC1slot}$ Optional 802.11b Wireless LAN with Lucent 56K modem or Lucent Modem Optional Bluetooth 1.1 $^{CDC2slot}$ | 15.0" UXGA(1600x1200) IPS TFT LCD | M(6) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadDock}$ One UltraPort |
| A31 | Mar 2002 | 330mm x 272.5mm x 45.8mm (13 x 10.7 x 1.8") | 3.27 kg (7.2 lb) | Intel Mobile Pentium 4-M $^{(Northwood)}$ FSB: 400MT/s | Intel 845MP | 1GB $^{(2xDDR-266SO-DIMM)}$ | ATI Mobility Radeon 7500 $^{(16or32MBDDR-SDRAM,AGP4X)}$ | One UltraBay Plus, One UltraBay 2000, One 2.5" IDE | Intel 82562ET 10/100 Ethernet $^{inCDC1slot}$ Optional 802.11b Wireless LAN with Lucent 56K modem or Lucent or Agere 56K modem $^{inCDC2slot(Exclusive)}$ | 14.1" XGA(1024x768) or 15.0" XGA(1024x768) or 15.0" SXGA+(1400x1050) TN TFT LCD | M(6) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadPortReplicatorIIThinkPadDockIThinkPadDockIIThinkPadMiniDock}$ |
| A31p | Mar 2002 | 330mm x 272.5mm x 45.8mm (13 x 10.7 x 1.8") | 3.49 kg (7.7 lb) | Intel Mobile Pentium 4-M $^{(Northwood)}$ FSB: 400MT/s | Intel 845MP | 1GB $^{(2xDDR-266SO-DIMM)}$ | ATI Mobility FireGL 7800 $^{(64MBDDR-SDRAM,AGP4X)}$ | One UltraBay Plus, One UltraBay 2000, One 2.5" IDE | Intel 82562ET 10/100 Ethernet $^{inCDC1slot}$ Optional 802.11b Wireless LAN with Lucent 56K modem and Bluetooth 1.1 $^{CDC2slot}$ or Lucent 56K modem $^{inCDC2slot(Exclusive)}$ | 15.0" UXGA(1600x1200) IPS TFT LCD | M(6) U | One White ThinkLight Supports $^{ThinkPadPortReplicatorThinkPadPortReplicatorIIThinkPadDockIThinkPadDockIIThinkPadMiniDock}$ One UltraPort |