Specifications:To support the hard drive card reader1. Compliance with USB 2.0 electrical specification 2. Support USB 2.0 High-Speed and Full-Speed Operation 3. Support 2.5"SATA or 2.5"IDE HDD 4. easy remover HDD 5. Support 2.5"SATA hot swaper 6. Easy installation 7. Support USB 2.0 HUB :2PORTS 8. multi in 1 card redaer and writer Support SM/CF I/CF II/MD/SD/Mini 9, SD/TFlash/MMC I/MMC II/RS-MMC/MS/MS Pro/MS Duo/MS MG/MS MG Pro/MS MG Duo/MS MG Pro Duo/MS Pro Duo/XD/TF 9. Plug & play with Win2000/ME/XP/CE3.0,win98with driver 10. Supports MAC OS9.1/Mas OS X 11. With/O AC 100/240V TO DC 5V/2A power(optional)