USB-A and USB-B connector pinout viewed from the front. source: Simon... | Download Scientific Diagram
![StarTech.com 6in USB 2.0 A to USB 4 Pin to Motherboard Header Adapter F/F - USB cable - USB (F) to 4 pin USB 2.0 header (F) - USBMBADAPT - Walmart.com StarTech.com 6in USB 2.0 A to USB 4 Pin to Motherboard Header Adapter F/F - USB cable - USB (F) to 4 pin USB 2.0 header (F) - USBMBADAPT - Walmart.com](https://i5.walmartimages.com/asr/851c7560-692e-422f-abfd-009afa8c63b1.08005eb19392e1c7cf4d74b991233b1c.jpeg)
StarTech.com 6in USB 2.0 A to USB 4 Pin to Motherboard Header Adapter F/F - USB cable - USB (F) to 4 pin USB 2.0 header (F) - USBMBADAPT - Walmart.com
![Why does micro USB 2.0 have 5 pins, when the A-type only has 4? - Electrical Engineering Stack Exchange Why does micro USB 2.0 have 5 pins, when the A-type only has 4? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/KSGN3.png)