M55e

Supports Intel® Pentium® 4 processors with HT Technology 800MHz FSB and 1MB L2 cache

Supports Intel® Pentium® D processors 800MHz FSB and either (2x1MB) or (2x2MB) L2 cache

Supports Intel ®Core™ 2 Duo processor with 1066MHz FSB and 2MB L2 cache

Custom ATX form factor

Note: Hyperthreading is supported only with Microsoft Windows XP Service Pack 1. Hyperthreading must be disabled when using Windows 2000.

#### **Processor**

Intel® Pentium® 4 Processor 631 with HT Technology

Intel® Pentium® D Processor 820

Intel® Pentium® D Processor 915

Intel® Pentium® D Processor 925

Intel® Pentium® D Processor 935

Intel® Pentium® D Processor 945

Intel® Core 2 Duo Processor E4300

Intel® Core 2 Duo Processor E6300

Intel® Core 2 Duo Processor E6400

Intel® Core 2 Duo Processor E6600

Intel® Celeron® D Processor 356

#### **Cache**

1MB cache - Intel® Pentium ® 4 processors

(2x1MB) or (2x2MB) L2 cache - Intel® Pentium® D processors

2MB or 4MB L2 cache - Intel® Core 2 Duo processors

512KB cache = Intel® Celeron® D Processor

#### **Chipsets**

Intel 946GZ

Integrated Intel Graphics Media Accelerator 3000

946GZ Southbridge

ICH7 Southbridge

IT8718 IO controller

#### **Memory**

PC2-4200 memory supported

PC2-5300 memory supported

PC2-6400 memory supported

Two 240 pin DDR2 SDRAM UDIMM sockets

Supports a maximum memory up to 4GB

Total useable memory can be less than 4GB depending on the operating system and system configuration.

ECC or parity memory is not supported

For models without a separate video card, memory supports both system and video.

#### **Audio**

Integrated High Definition (HD) PCI AC'97 2.3 compliant codec

2/5.1 channels HD audio codec

AD1986A HD CODEC

Front - Microphone-in, headphones out

Rear - Line-in, line-out

Jack sensing, jack retasking - software will automatically detect which jack the microphone is using.

Software-based audio (done by processor and ICH7)

Keyboard and mouse

Preferred Pro full-size keyboard

USB Optical Wheel mouse

### **Expansion**

#### **Bays**

One 3.5-in slim (half-inch height) diskette drive bay (populated on selected models)

One 3.5-in standard size HDD bay (populated)

One 5.25-in standard size height optical (populated on selected models)

**External ports**

Six USB ( two in front, four in back) [Ver 2.0]

One Ethernet RJ-45

Two serial 9-pin 16550 compatible (select models may have a second serial port)

One parallel 25-pin parallel (EPP, ECP), IEEE 1284

IEEE 1394 adapter (on selected models)

VGA monitor port

Audio line in, headphone out, and microphone in jacks

PS/2 mouse connector

PS/2 keyboard connector

Slots

Two PCI Express x 1 slots (half length)

### **Power**

#### **Power supply**

220 watt supply with variable fan speed

110 volt or 220 volt operation controlled by a switch on the back of the unit

### **Security**

One lock to secure both cover and entire system to fixed object:

Padlock loop (in rear for optional padlock)

Security slot (in rear for optional cable)

No keylock

Power-on password

Configuration password (administrator password)

Hard drive password (user and master)

Boot sequence control

Boot without keyboard, mouse, or diskette

USB/Ethernet/serial/parallel/SATA/EIDE/diskette enable or disable

Disk, removable device, and network device password

Diskette write protect

Front USB port disablement

### **Operating system**

Microsoft Windows XP Home

Microsoft Windows XP Professional

Note: Preloaded software utilizes the disk-to-disk recovery method. Select models ship without the Operating system.

### **Storage**

#### **Optical drive**

48x CD-ROM

16x DVD-ROM

48x32x48x16x CD-RW/DVD combo drive

Multi-burner Plus 16x

### **Video**

#### **Intel Graphics Media Accelerator 3000**

15-pin VGA output on planar

Uses Intel Dynamic Video Memory Technology (DVMT)

For models without a separate video card, memory supports both system and video.