Up to 480 Mbit High-speed USB! With LED operation light No external power required! Working without power supply USB 2.0 Version, high speed data transfer, can also be used for USB 1.1 Support: 1.CF1 (Compact Flash I) 2.CF2 (Compact Flash II) 3.Extreme CF 4.Extreme 3 CF 5.Ultra 2 CF 6.HS CF 7.MD (IBM Microdrive) 8.MS (Memory Stick) 9.MS Duo 10.MS Magic Gate 11.MS Magic Gate Duo 12.MS Magic Gate Pro 13.MS Magic Gate Pro Duo 14.Extreme MS Pro 15.Extreme 3 MS Pro 16.Ultra 2 MS Pro 17.HS MS Magic Gate Pro 18.HS MS Magic Gate Pro Duo 19.MS ROM 20.MS Select 21.SD (Secure Digital card) 22.Mini SD 23.Extreme SD 24.Extreme 3 SD 25.Ultra 2 SD 26. MMC 1 (Multimedia Card) 27.MMC 2 28.MMC 4.0 29.RS MMC 30.HS RS MMC 31.SM (Smart Media-card) 32.XD (XD- card) 33.T-Flash Operation: 1. this device the USB port of your computer, then it will be showed as a data carrier in PC 2. A direct access to the data is possible, easy to copy and process System requirement: Intel Pentium III or above, with min. 64MB RAM, a free USB 2.0 or 1.1 Port Windows?98SE / ME / 2000 / XP Mac os V9.2 or above Package included: 1 x 33 in 1 Card Reader/Writer 1 x USB cable 1 x CD driver