b' Features: for Windows 7/Vista/XP and for Mac OS Fully for USB2.0 and backward for USB1.1 The converter card is plug and for play, which is easy and convenient to install. It also supports the reading of Micro SDXC/SDHC/SD-Card Specifications: Item Name: Converter Card Material: Metal ABS Transmission Rate: 480Mbps(2.0 Standard) Dwonward Compatibility: 1.0 Interface Type: Mini Pci-e, 2 x Micro SD-Card Slot Compatible System: for Windows ME/2000/XP/Vista/7/8/10, for Mac-OS Features: Easy Installation, High Strength, Plug for Play Size Details: approx 5cm x 3cm/1.97 x 1.18 (Approx.) Note: Notes: Due to the light and the screen setting difference, the item s color may slightly differs from the pictures. Please allow slight dimension difference due to the manual measurement. The product does not support TF card hot swap. The product supports the reading of TF card memory up to 512GB. The TF / SD card is not included. Package includes: 1 x Converter Card (Others Not Included)'