<ul class="disc"> <li>Mini and sleek design, most suitable for use with mobile computer and notebook PC <li>USB 2.0 Hi-Speed transfer rate up to 480Mbps <li>USB Bus-Powered, no external Power Source Needed <li>Plug-and-Play, Hot-Swappable <li>Built with blue LED indicator for Card Reader and compute connection status monitoring <li>Built-in USB-A plug and USB cable for quick and direct connection with USB port <li>USB A Plug can be rotated 180&deg for multiple connection angles with PC <li>Body of reader can be rotated 180&deg for easier access to card slots <li>Compatible with Windows, OSX, and Linux (all versions) <li>Dimensions: 7.64 x 4.3 x .8 cm <li>Weight: 26g <li>4 Slots for media</ul> <table border="0" cellspacing="5" width="600"> <tr><td>Slot 1</td><td>Slot 2</td><td>Slot 3</td><td>Slot 4</td></tr> <tr> <td> 1. SD 2. SDHC 3. Extreme SD 4. Extreme III SD 5. Extreme III SDHC 6. Ultra SD 7. Ultra II SD 8. Ultra II SD Plus 9. Ultra II SDHC 10. Super SDHC Duo 11. SD Elite Pro 12. SD Ultra X 13. SD Pro 14. HS SD 15. MMC 16. MMC 4.0 17. MMCmobile 18. RS-MMC 19. RS-MMC 4.0 20. RS-MMCmobile 21. HS MMC 22. HS RS-MMC 23. DV RS-MMC 24. miniSD 25. miniSD IO 26. miniSDHC 27. MMCmicro </td> <td> 28. MS 29. MS Magic Gate 30. Extreme MS Pro 31. Extreme III MS Pro 32. MS Duo 33. MS HS Duo 34. MS MG Duo 35. MS Pro 36. MS HS PRO 37. MS MG PRO 38. MS PRO Duo 39. MS PRO Duo HS 40. MS Pro Duo MG 41. MS Select 42. HS MS MG Pro 43. HS MS MG Pro Duo 44. MS PRO Ultra II 45. MS PRO Duo Ultra 46. MS PRO Duo Ultra II 47. MS-ROM 48. MS PRO Duo Ultra MARK2 49. MS Duo-ROM 50. MS I/O Expansion </td> <td> 51. microSD 52. microSDHC 53. T-Flash 54. M2 </td> <td> 55. xD 56. xD Type M 57. xd Type M+ 58. xD Type H </td> </tr> </table> NOTE: Usage of Slot 2 and Slot 3 are mutually exclusive. You can use cards simultaneously in all slots except 2 & 3. Ex, "1, 2, 4" or "1, 3, 4"