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Tek Republic TUH-3700 USB 3.0 7 Port Hub with Two (2.1 amps per port) USB fast charging ports

7 Port USB 30 transfer rate up to 5Gbps
Two High-Current 21 amps USB Fast Charging Port
Complies USB-IF Battery Charging Specification
Backwards compatible with USB 20 and 11
Compatible with Windows XP Vista78 and Mac OS X v1039 or later