No driver is needed Compatible with ASUS EEEPC 901 and 900A 50-Pin standard compact flash socket. Compatible with Compact Flash Type I, Type II, and support IBM Micro-drive with CF-II interface. Supports DMA and Ultra DMA modes. A compatible flash media card will be required to use these modes. Compatible* with DOS, Windows 3.1, NT4, 98SE, Me, 2000 and XP, Vista, Unix, Linux . Dimensions: 70mm x 32mm Weight: 7g