This is a USB 2.0 type A to Micro-B 5-pin black cable. You know, the mini-B connector that usually comes with cell phones, Cameras, MP3 players, etc. We specifically like these 6" long cables because using USB peripherals in projects within a small enclosure is much easier these days, and most times you really don't need six feet of cable to do that. You can still use this USB cable with our Micro-USB LiPo Charger Basic, Pro Micros, Micro-B USB breakout, or anything else that utilizes a Micro-B connector type!