CG0092B Four USB interfaces Each interface can control individually USB 2.0 Required System: Win95 osR2/ 98SE/ Me/ 2000/ XP/ VISTA, Linux2.4 and Mac os 8.5 or above Transmitting Speed: Full Speed: 480Mbps, Middle Speed: 12Mbps, Low Speed: 1.5Mbps Power: USB 5V / 500mAh