This is a 5-pack of 5in micro-USB male to USB 2.0 female black On-the-Go cables. Each allows your On-the-Go capable micro-USB 2.0 (B) equipped mobile device to connect to any USB 2.0 (A) equipped device, such as a mouse, keyboard, thumb drive, or external hard drive. Our on-the-go cables are backed by a 3 year warranty and are guaranteed to work the first time.This is a 5-pack of 5in micro-USB male to USB 2.0 female black On-the-Go cables. Each allows your On-the-Go capable micro-USB 2.0 (B) equipped mobile device to connect to any USB 2.0 (A) equipped device, such as a mouse, keyboard, thumb drive, or external hard drive. Our on-the-go cables are backed by a 3 year warranty and are guaranteed to work the first time.