Features: with Micro SD Card slot Support Plug & Play LED For Bus Activity Monitoring Supports SD High Capacity (SDHC) Type: 3.5" Internal Card Reader & Writer Interface: USB 2.0 Power Source: USB Bus Powered (No External Power Required) Supported OS: Windows 98/ 98SE/ ME/ 2000/ XP/ Vista; Linux 2.4.0; Mac OS 9.0 or later Supported Card Formats: xD, T-Flash, SM, SD, MiniSD, Extreme SD, Extreme III SD, Ultra II SD, MMCI, MMCII, RS-MMC, MMC4.0, ULTRA MMC, HS RS MMC, MS, MS-PRO, MS-DUO, MS PRO-DUO, Extreme MS PRO, Extreme III MS PRO, HS MS-MG PRO DUO, MS-MAGICGATE, MS-MG-PRO, MS-MG-DUO, MS-MG-PRO-DUO, MS-ROM, HS MS-MG PRO, Micro DRIVE, Ultra II MS PRO, CFI, CFII, Extreme CF, ExtremeIII CF, Ultra II CF, HS CF Card Package: Retail.