Required cabling included Compatible with Windows and Mac operating systems Powered via USB - no external power adapter required 4 x USB 3.1 Gen 1 (Type-A) ports for peripheral devices LED indicator shows active computer 1 x Micro-B USB port for power 2 Year TRENDnet Manufacturer's Protection Simple setup with a driverless installation Backwards compatible with USB 3.0, 2.0, and 1.1 devices 4 x USB 3.1 Gen 1 (Type-A) ports for PC connections