- 1 UPSTREAM AND 4 DOWNSTREAM USB PORT INCLUDED - FULLTY COMPLIANT WITH USB SPECIFIACTION VERSION 2.0 - HOT PLUG&PLAY USB DEVICE - HALF-TRANSPARENT DESIGN WITH BLUE LED FOR POWER - INTERFACE : USB 2.0, COMPATIBLE WITH USB 1.1 - DATA TRANSFER RATE : 1.5MBPS/ 12MBPS/ UP TO 480 MBPS - BUS-POWER LIMIT CURRENT PROTECTION : 500MA