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5 pin Mini-USB type B plug connector layout
5 pin Mini-USB type B plug connector
at the peripherals
5 pin Mini-USB type B receptacle connector layout
5 pin Mini-USB type B receptacle connector
at the controller
mini-USB connector visual pinout:
mini-USB connector diagram
click to enlarge pinout
USB (Universal Serial Bus) designed to connect peripherals and exist in a wide variety of digital devices.
Pin Name Cable color Description
1 VCC Red +5 VDC
2 D- White Data -
3 D+ Green Data +
4 ID   May be N/C, GND or used as an attached device presence indicator (tied to GND with resistor)
5 GND Black


 

Ground

USB pinout signals

USB is a serial bus. It uses 4 shielded wires: two for power (+5v & GND) and two for differential data signals (labelled as D+ and D- in pinout). NRZI (Non Return to Zero Invert) encoding scheme used to send data with a sync field to synchronise the host and receiver clocks. In USB data cable Data+ and Data- signals are transmitted on a twisted pair. No termination needed. Half-duplex differential signaling helps to combat the effects of electromagnetic noise on longer lines. Contrary to popular belief, D+ and D- operate together; they are not separate simplex connections.

USB cable wires:

Shielded:
Data: 28 AWG twisted
Power: 28 AWG - 20 AWG non-twisted

Non-shielded:
Data: 28 AWG non-twisted
Power: 28 AWG - 20 AWG non-twisted

Power Gauge Max length
28 0.81 m
26 1.31 m
24 2.08 m
22 3.33 m
20 5.00 m


 


 

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