Micro-USB connector pinout diagram @ pinouts micro USB pinout signals. USB is a serial bus. Micro-USB cable uses 4 shielded wires: two for power (+5v & GND), 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 4.8/5(54) USB pinout, wiring and how it works! USB 2.0 has a maximum signaling rate of 480 Mbit/s and USB 3.0 has a usable data rate of up to 4 Gbit/s (500 MB/s). Who knows what the future reserves? USB Connections. Each USB device uses the standard A type connector to the USB host or Hub through A type receptacle. USB wiring diagram- Micro USB pinout, 7+ Images | SM Tech The most common is “USB micro-B” to standard “USB-A” which is generally represent in mobile chargers. USB wiring diagram comes in handy when USB port or connector either of them malfunctions or completely out of order, also for engineers and hobbyist who wants to explore the electronics practically.