Draw power directly from USB Port. No external power needed. This Micro SD card reader is compatible with USB 2.0 . System supports: Windows 98 / 98SE / ME / 2000/XP / Vista / WIN7 / Mac OS X 9.0 and Linus2.4 later version.This multi slot card reader supports: M2, SD, SDHC, DV, Micro SD, Mini SD & TF.
Features: 4 in 1 Slim size Easy carry. Plug & play and hot swapping.
Dimension: 5.6cm x 2.2cm x 1.3cm