USB

1st Official Post

October 28, 2025 at 1:29 PM

Official Post

Over the years there are now so many different USB standardsthat I collect them here on one page.

It's sometimes difficult to follow especially when you look at USB 3.x

Types of USB Ports and Connectors

USB - A

USB - B

USB - Mini

USB - Micro

USB - C

USB - Lightning

USB 3.0 - Micro B

USB 3.0 - (Powered) B

USB-C Lanes and Speeds

Specification	Speed / Lane	Number of lanes	Bandwith
USB 3.2 Gen 1×1	5 Gbps	1	5 Gbps
USB 3.2 Gen 2×1	10 Gbps	1	10 Gbps
USB 3.2 Gen 1×2	5 Gbps	2	10 Gbps
USB 3.2 Gen 2×2	10 Gbps	2	20 Gbps
USB4 Gen 2×2	10 Gbps	2	20 Gbps
USB4 Gen 3×2	20 Gbps	2	40 Gbps

USB Standards

Standard	Other Name	Year	Connector	Max. Speed	Cable length
USB 1.1	Full Speed USB	1998	USB-A USB-B	12 Mbps	3 m
USB 2.0	Hi-Speed USB	2000	USB-A USB-B USB Micro A USB Micro B USB Mini A USB Mini B USB-C	480 Mbps	5 m
USB 3.2 Gen 1	USB 3.0 USB 3.1 Gen 1 SuperSpeed	2008 (USB 3.0) 2013 (USB 3.1)	USB-A USB-B USB Micro B USB-C	5 Gbps	3 m
USB 3.2 Gen 2	USB 3.1 USB 3.1 Gen 2 SuperSpeed+ SuperSpeed 10 Gbps	2013 (USB 3.1)	USB-A USB-B USB Micro B USB-C	10 Gbps	3 m
USB 3.2 Gen 2x2	USB 3.2 SuperSpeed 10 Gbps	2017 (USB 3.2)	USB-C	20 Gbps	3 m
USB 4	USB4 Gen 2x2 USB4 20Gbps	2019	USB-C	20 Gbps	0.8 m
USB 4	USB4 Gen 3x2 USB4 40Gbps	2019	USB-C	40 Gbps	0.8 m

USB Port Color Coding

Color	Type	USB Specification	Additional info
white	USB-A / USB-B Micro USB-A	USB 1.x
black	USB-A / USB-B Micro USB-B	USB 2.0 Hi-Speed
blue	USB-A USB-B	USB 3.0 SuperSpeed
green	USB-A USB-B	USB 3.1 Gen 1
red	Sleep-and-Charge USB-A	USB 3.1 Gen 2 USB 3.2	usually always on port
yellow	Sleep-and-Charge USB-A	USB 2.0 USB 3.0	higher power port always on port
orange	Sleep-and-Charge USB-A	USB 3.0	charging capable maybe charge only

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USB

Types of USB Ports and Connectors

USB-C Lanes and Speeds

USB Standards

USB Port Color Coding

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