Features: Adopt the latest USB3.1 type c interface, support positive and negative plug. SD card single drive letter transmission rate 480Mbps; TF card single drive letter transmission rate 480Mbps The high data transmission rate can reach USB3.1 5Gbps USB3.0x3 transfer rate 5Gbps ;SD/TF supports up to 512G brand new and high quality Extending your laptop with multi-ports,with 3x USB 3.0 port , SD TF card reader for superior data transfer. Specifications: Size:approx 86x24x10mm/3.38x0.39x0.94in Main control chip: GL3510/GL823K Interface type: USB3.0x3/TFx1/SDx1 for Shell material: aluminum alloy Plug material: ABS plastic Color: Gray/Silver (Optional) Product usage: Support all models with Type C and Thunderbolt 3 series notebooks and Macbooks- with type c notebooks Package Includes: 1 x 5 in1 Type C Hub note: 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.