Features: brand new and high quality Add three USB 3.0 ports data transfer rate up to 5 Gbps; and SD/TF card reader on the computer; Backward for USB 2.0 and 1.1 specifications. Does not require any software or complicated installation process. The slim design saves you valuable desktop space. Support SD, SDXC (up to 2TB), SDHC, MicroSD, MicroSDXC, Micro SDHC card System Requirements: for Windows 98SE / ME / 2000 / XP / Vista / 7/8/10 Linux 2.4 or higher and more Ultra-thin and long-lasting high-quality aluminum material With SD/TF card reader combination Ultra-thin high-quality aluminum 3-port USB 3.0 hub specially designed foriMac. Specifications: Size: approx 108x34cm/4.25x1.33in Material:Aluminum Alloy Color: Silver USB3.0 Transfer Speed: 5Gbps Type: Type C/ USB 3.0 interface (Optional) System Requirements: Os-x 10.6 and higher; for Windows 98SE / ME / 2000 / XP / Vista / 7/8/10 Linux 2.4 or higher Note: Please note: It is designed for i-Mac released in November 2012 or later. (21 inches / 27 inches / 5K) The type C interface can only transfer data, not for charging. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x Hub (Type C/ USB3.0 interface Optioanl) 1 x User Manual