The USB hub is made of high-quality aluminum alloy, which is sturdy and durableExquisite workmanship, the overall gray appearance presents a sense of luxury, which is more suitable for your computerSuperior heat dispersion: striped surface and aluminum body provide superior heat dispersion and promise stable and safe usageConnecting four devices simultaneously such as keyboard USB disk, hard disk, and other USB devicesExtra slot, ultra-speed: the TF card slot provides extra expansion for your devicePowerful core, unparalleled speed. IC chip enables stable connection and speedy transmission Specifications: Product model: ORICO-AH-12FMaterial: Aluminum AlloyInput: Type-COutput: USB3.0 x 1/USB2.0 x 2/TFTransmission speed: USB3.0: 5Gbps, USB2.0: 480MbpsDimension: 88 x 15 x 7.5mm Package included: 1 x USB3.0 HUB Other items not included