Thunderbolt

Thunderbolt is an I/O technology developed by Intel in collaboration with Apple Inc. It first introduced by Apple in its 2011 line of MacBook Pros and became the official replacement for FireWire and was the standard above USB until USB4.
==Versions==
*Thunderbolt 1 can reach transfer rates of up to 10Gbps through an interface that looks like and is backwards compatible with Mini DisplayPort. Thunderbolt also can deliver Gigabit Ethernet through an adapter.
*Thunderbolt 2 uses the same Mini DisplayPort connector as Thunderbolt 1, but can reach transfer rates of up to 20Gbps.
*Thunderbolt 3 uses the USB-C form factor and can reach transfer rates of up to 40Gbps. USB4 uses the same form factor and is basically the same as a USB-C port that supports Thunderbolt 3 signals.
*Thunderbolt 4 uses the same USB-C form factor as Thunderbolt 3, but specifies a minimum bandwidth of 32Gbps for PCIe link, support for dual 4K displays, and protection against attacks.Introducing Thunderbolt 4: Universal Cable Connectivity for Everyone, Intel. 2020-07-08.
==Pinouts==
===Thunderbolt 1 and 2===
Pin	ID 	Description
01 	GND 	Ground
02 	HPD 	Hot plug detect
03 	HS0TX(P)	HighSpeed transmit 0 (positive)
04 	HS0RX(P)	HighSpeed receive 0 (positive)
05 	HS0TX(N)	HighSpeed transmit 0 (negative)
06 	HS0RX(N)	HighSpeed receive 0 (negative)
07 	GND 	Ground
08 	GND 	Ground
09 	LSR2P TX	LowSpeed transmit
10 	GND 	Ground (reserved)
11 	LSP2R RX	LowSpeed receive
12 	GND 	Ground (reserved)
13 	GND 	Ground
14 	GND 	Ground
15 	HS1TX(P)	HighSpeed transmit 1 (positive)
16 	HS1RX(P)	HighSpeed receive 1 (positive)
17 	HS1TX(N)	HighSpeed transmit 1 (negative)
18 	HS1RX(N)	HighSpeed receive 1 (negative)
19 	GND 	Ground
20 	DPPWR 	Power
==Gallery==
3 4f79189400e46.jpg|The Mini DisplayPort to VGA Adapter is backwards-compatible with Thunderbolt 1 and 2.
264776-apple-macbook-air-thunderbolt.jpg|11 and 13-inch MacBook Airs with a Thunderbolt port
mac_pro_closed_ports_hero.jpg|The 2013 Mac Pro with 6 Thunderbolt ports, more available than USB 3.0 ports.
==References==
==External links==
*Introducing Thunderbolt. at Apple (archived 2011-02-26)
**MacBook Pro: Thunderbolt (archived 2011-02-27)
**iMac: Thunderbolt (archived 2011-05-11)
**Adapters for the Thunderbolt 3 or USB-C port on your Mac or iPad Pro at Apple Support
* at Wikipedia
Category:Apple hardware
Category:Intel products
Category:Connectors