Description: 1 x Riser Card PCIe to Dual TF Card is a mini card (Micro-SDXC/SDHC/SD) dual card reader designed for notebooks that can realize SSD and Readyboost functions. Users can easily insert the TF card into the half-height mini card slot of the notebook by using the MR14, which is very convenient and simple to operate. MR14 is not only a card reader, but also has the functions of a flash card controller, a DMA hardware engine and a 5V~3.3V/3.3V~1.8V voltage regulator. In addition, MR14 can also support USB mass storage and fast transfer functions Material: PC+metal Color: as shown Specifications: Designed for notebooks MicroSD card dual card reader Compatible with Windows 7/Vista/XP and Mac OS Fully compatible with USB2.0 and backward compatible with USB1.1 Support Windows general mass storage devices. Support operating system: Windows ME/2000/XP/Vista/7/8/10 and Mac OS. Complies with USB Device Class Definition for Mass Storage and Bulk-Transport V1.0 Complies with Secure Digital Card (SD) specification up to ver. 3.0 (SDXC). Integrated hardware DMA engine enhances overall performance of data transfers. USB 2.0 based PCI Express Half-Mini Card design, suitable for any PCI Express Mini Card slot. Package Contents: 1 x Adapter card