Check the listing for details. Memory Card Reader Mini 26-IN-1 USB 2.0 High Speed For CF xD SD MS SDHC LOT. Condition: New. Listed at 5.29 USD. Features:1.USB 2.0 products, compatible with USB1.12. Quickly browse and edit files directly on the flash drive3. Easy to carry, download and upload,with 12Mbps transmission bandwidth and 480 Mb / s (480 Mb / s) data transfer rate4. With USB cable, USB interface, no external power supply5. Support hot swap,plug and play6. with LED light, can show read and write conditions7. Can be repeatedly read and erase8. Fashion appearance, USB short-term connection body more convenient System environment:Operating temperature: 0 ° C ~ 70 ° C; Storage temperature: 10 ° C ~ 90 ° C; Humidity: 10% ~ 90% Cards support:A：CF/CFII/Ultra CF/MD；B：SD / Mini-SD /SDC；C：MMC / MMCII / Ultra MMC / RS-MMC；D：XD；E：MS / MS-MGF：T-Flash/SD / Mini SD / XD / CF / T-Flash / SDHC, MMC / MMC Micro / HS-MMC / RS-MMC / MMC Mobile / Mobile-Poketbnet / Micro, Drive / Micro SD, M2 / MS / MS PRO / MS DUO / HS-MS / Duo-Gaming System support:Windows 98/ 98SE/ME/2K/XP/ Vista/ 7/ 8/ 10/, Mac OS 8.5 and up 9/X , Linux 2.4 and up If the part where you plug the cord into the card reader does not seat well as its is very tight, and has to be somewhat forced in. As soon as it seats correctly, the card reader powers up and works! Please be aware when inserting a memory card make sure that the pins is towards the middle of the device. Example ( when you insert the memory in the last row the pins have to be upwards and the opposite for the upper raw the pins have to face down and insert it )