What are the common USB plug types and sizes

Before understanding the types of USB plugs, let's first understand the relevant knowledge of USB plugs. The USB (Universal Serial Bus) plug is used to regulate the connection and communication between the computer and external devices. It is a special plug used for digital electronic products. The common USB plug is about 4.5mm thick. In order to facilitate your purchase, I will explain the types of USB plugs and other related knowledge in detail for you. I hope it will help you in your purchase!

usb plug size

usb1.0 transmission speed 1.5Mbps

usb1.1 transfer speed 12MBps

Usb2.0 full speed (Full Speed) transmission speed 12MBps

usb2.0 high speed (Hi Speed) transmission speed 480MBps

The maximum transmission bandwidth of usb3.0 is up to 5.0Gbps, which is 640MB/s

USB plug type

There are three types of usb plugs, classified according to the terminals of usb plugs.

a) Type A: Mainly used to connect with the host computer.

b) Type B: Mainly used to connect with computer peripherals, such as printers and scanners.

c) Mini B type: mainly used to connect with mobile and portable devices, such as mobile phones, MP3s, digital cameras, PDAs, etc.

usb plug wiring

Red line: positive pole of power supply (the mark on the wiring is: +5V or VCC)

White line: negative voltage data line (identified as: Data- or USB Port -)

Green line: positive voltage data line (identified as: Data+ or USB Port+)

Black wire: ground (labeled as: GROUND or GND).

One and six needle double row

This kind of USB plug interface is not commonly used, seen in the elite P6STP-FL (REV: 1.1) motherboard, used in Haier Xiaoman 766 host. The positive and negative are shared by the two front USB interfaces. The two USB interfaces require 6 wires to connect to the motherboard. The wiring is shown below.

■DATA1+

■DATA1-

■VCC

■DATA2-

■DATA2+

■GND

Two, eight needle double row

This USB plug interface is the most common, such as the elite P4VXMS (REV: 1.0) motherboard. Provides a standard nine-pin connection method, making it easy for DIY to connect when assembling a computer.

■VCC

■DATA-

■DATA+

□NUL

■GND

■GND

□NUL

■DATA+

■DATA-

■VCC

Three, nine needle double row

This type of front USB plug interface is the most common, such as: Elite P6IEA, INTEL D845GLVA motherboard, L4IBMGL2 (REV: 1.0B), Elite 865PE-A (REV: 2.0), Jetway P4X400DA motherboard, Jetway JP4MFM.

■VCC

■DATA-

■DATA+

■GND

■NC

■VCC

■DATA-

■DATA+

■GND

□NUL

Four, ten pin double row

The elite P6STM motherboard and the FC-810T motherboard used by Shenzhou computers use ten-pin dual-row USB ports. The ninth and twelve are idle pins, and the two USB connections are the same.

■VCC red

■DATA- White

■DATA+ green

■GND black