Lnterface Type: USB 3.0 Funtion: Reader Standard: uSB 3.0 input: USB 3.0 output: 3 usb 3.0 port and SD, material: Aluminum Compatibility: SDXC, SDHC,SD,Micro SDX function: USB 3.0 Hub with SD/TF Car plugging-and-play driver-free compatible with USB devices. Adds three USB 3.0 port and SD/TF card reader to your computer Supports SD, SDXC (up to 2TB), SDHC, Micro SD, Micro SDXC, Micro SDHC cards. Blue LED indicator reveals the power status. Saves on syncing time with data transfer rates of up to 5 Gbps. Slim body design, tailor-made for iMac, slim and compact, easy to carry. Note: 1. Please Allow 1-3cm Differs Due To Manual Measurement. 2. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Please refer to the actual product.Thanks For Your Understanding. Multi-system compatible, plug and play without driver.