BUSlink i-Rocks Crystal All-In-One Hub Reader (Mac + PC). Interface type: USB. Data transfer rate: 48 Mbit/s. Colour of product: Silver. Dimensions (WxDxH): 85 x 83 x 16 mm, Weight: 55 g. Compatible operating systems: Windows 98. Windows ME. Windows 2000. Windows XP. Mac OS X 10.1