USB2.0 COMPATIBLE WITH USB1.1 SUPPORTS :SECURE DIGITAL CARD, MULTI MEDIA CARD,MEMORY STICK CARD,MEMORY STICK PRO,MS- DUO,MS-PRO-DUO,SMART MEDIA CARD,CF , CF , IBM MICRO DRIVE,RS-MMC AND MINI-SD WITH ADAPTOR SUPPORTS HOT-SWAPPING SUPPORT USB2.0 HI-SPEED (480MBPS) MODEL/USB 1.1 FULL-SPEED (12MBPS) MODEL. USB POWERED; NO EXTERNAL POWER REQUIRED. ACTIVE LED INDICATORS OF POWER AND BUSY (READ/WRITE) EQUIPPED. SUPPORT PLUG