usb 2.0 hub 4 ports 1.Led Light 4 port USB HUB 2.Convenient to carry 3.USB1.1/USB2.0 4.Excellent ... . Reliable transmission for up to 5-meter USB cable segments5. Connectors: 1 “B” Root Port; 4 “A” Device Ports6 ... System Requirements: 486, Pentium, or Compatible Computer with USB Support, Windows 95 Rev B, 98, 2000, ME, XP, Vista, 7 ... your reference and we support to customize. usb 2.0 hub 4 ports