1
Thunderbolt 1
Max Speed
10Gbps
2
Thunderbolt 1
Year
2011
3
Thunderbolt 1
Connector
Mini DisplayPort
4
Thunderbolt 1
Daisy Chain
6 devices
5
Thunderbolt 2
Max Speed
20 Gbps
6
Thunderbolt 2
Year
2013
7
Thunderbolt 2
Connector Type
Mini DisplahyPort
8
Thunderbolt 2
Display
4k
9
Thunderbolt 3
Max Speed
40 Gbps
10
Thunderbolt 3
Year
2015
11
Thunderbolt 3
Connector Type
USB-C
12
Thunderbolt 3
Ethernet
10gbps
13
Thunderbolt 4
Max Speed
40 Gbps
14
Thunderbolt 4
Year
2020
15
Thunderbolt 4
Connector Type
USB-C
16
Thunderbolt 4
Display
Dual 4k or solo 8k