Features:OOTDTYbrand new and high qualityAdd three USB ports data transfer rate up to 5 Gbps; and card reader on the computer; Backward for USB 2.0 and 1.1 specifications.Does not require any software or complicated installation proce. The design saves you valuable desktop space.Support SDXC (up to 2TB), SDHC, MicroSDXC, Micro SDHC cardSystem Requirements: for Windows 98SE / ME / / XP / Vista / 7/8/10 Linux 2.4 or and moreUltra-thin and long-lasting high-quality aluminum materialWith card reader combination Ultra-thin high-quality aluminum 3-port USB hub specially designed foriMac.Specifications:Size: approx 108x34cm/4.25x1.33inMaterial:Aluminum AlloyColor: SilverUSB3.0 Transfer Speed 5GbpsType: Type C/ USB Optional)System Requirements: Os-x 10.6 and for Windows 98SE / ME / / XP / Vista / 7/8/10 Linux 2.4 orPackage Includes:1 Hub (Type C/ USB3.0 Optioanl)1 User ManualNote:PleaseNote:It is designed for i-Mac released in November 2012 or later. (21 inches / 27 inches / 5K)The type C can only transfer data, not for charging.Due to the problems of lighting effects and angles, there will be certain tolerances in the product, please understand.Please allow 0-1cm error due to the manual measurment.