USB Connectors - Shape, Color and Power Rating

USB Connector Shapes for USB miro B and USB micro C

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USB B type
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USB C type
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USB A type
* source of images

USB Version Connector Colors - White, Black, Blue and Red


White USB 1.x

Black USB 2.x

Blue USB 3.x

Red Charger
* source of images

USB Version Speed

Release Name Release Date Mode Abbreviation Gross Data Rate
USB 1.0 January 1996 Low Speed LS 1.5 Mbit/s (187.5 KB/s)
Full Speed FS 12 Mbit/s (1.5 MB/s)
USB 1.1 January 1998 Fixed common issues of USB 1.0. Data rates remained the same.
USB 2.0 April 2000 High Speed, also Hi-Speed HS 480 Mbit/s (60 MB/s)
USB 3.0* November 2008 SuperSpeed SS 5 Gbit/s (625 MB/s)
USB 3.1 Gen 2 July 2013 SuperSpeed+ SS+ 10 Gbit/s (1.25 GB/s)
*USB 3.0 now commonly referred to as USB 3.1 Gen 1

USB Version Power

Specification Maximum Power Maximum Voltage Maximum Current
USB 2.0 2.5 W 5 V 500 mA
USB 3.0 and 3.1 4.5 W 5 V 900 mA
USB BC 1.2 7.5 W 5 V 1.5 mA
USB Type-C 1.2 15 W 5 V 3 A
USB PD 3.0 100 W 20 V 5 A
USB Power Delivery specifications

Source of abouve USB information