The memory card reader supports hot plug function. It is powered by the USB interface without an external power supply. It adopts high-speed USB2.0 transmission and supports USB 1.1. Made of metal material, it is durable to use. With the compact size, it is portable. Item Name: Card Reader Material: Plastic Applicable: for TF/MS/M2 Card Transmission Speed: Up to 480mb/s Compatible Systems: for Windows 98SE/Me/2000/XP/Vista/7, for Mac OS 9.0 or Higher Version Compatible with: T-Flash, Micro SDHC, Memory Stick Micro (M2), Memory Stick (MS), Memory Stick Pro (MS Pro), etc Features: Durable, High Speed Transmission, Easy Storage Size: 68mm x 20mm x 16mm/2.68" x 0.79" x 0.63" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Card Reader (Card Not Included)