Ultron USB-HUB 2.0 4-Port UH-440s. Data transfer rate: 480 Mbit/s. Weight: 26 g, Width: 49 mm, Depth: 49 mm. Packaging width: 155 mm, Packaging depth: 130 mm, Packaging height: 55 mm. Interface: USB. Compatible operating systems: Windows2000, XP, Vista, Linux, Mac OS 8.5