Monster Digital 32GB OTG USB 3.0 Super Speed Mobile Drive (Metallic Black) 4-Pack Bundle Monster Digital 32GB OTG USB 3.0 Super Speed Mobile Drive (Metallic Black) 4-Pack Integrated SuperSpeed USB 3.0 interface USB (type-A male) and Micro-USB connectors Compatible with Windows and Mac, Compatible with Android devices Backwards-compatible with USB 2.0