information : lian li aluminium usb 2.0 internal 3.5" 12 in 1 card reader black card reader cr-33a/cr-33b compliant with usb specification version 2.0 and 1.1 support for operation systems in - windows® 98/se, windows® 2000 - windows me and windows® xp (no driver is required) - mac™ os 8.6 and 9.x - mac™ os 10.1.2 (no driver is required) easy plug & play installation device usb bus power, no external power is required support for storage card including: - compactflash™ card type i & ii - ibm micro drive - smartmedia™ card - secure digital card - mini sd card - multimedia card - memory stick™ / pro™ / duo™ / pro duo™ high transfer rate for usb 2.0 interface: 480mbits/sec a convenient and a fast data exchange (mp3. pda, digital camera, data, etc¡k) size:3.5" transfer rate: high speed up to 480mbit/sec power supply: dc 5v from usb port max power consumption: 500ma led indicator: blue=> power on emission/safety: fcc class b, ce operating temperature: 0¢xc~60¢xc storage temperature: -20¢xc~70¢xc humidity: 0%~80% rh