Computer Accessory Sets features: 7-in-1 USB 3.1 hub type-C to USB 3.0 * 3 + HDMI 4K + SD / TF + PD with mobile phone bracket for MacBook PC millet tablet Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Transmission rate: 5GbpsColor: grayMaterial: aluminum alloyType-C to HDMI + USB3.0 * 3 + SD / TF + PD is a multi-functional HD docking station. Product Description:Usb-c / m to HDMI / F + 3 * usb3.0a/f + SD / TF / F + type-C Pd / F is a multi-functional HD hub. The input device has a usb-c interface for mobile phones, tablets, laptops, etc. the usb-c interface is small in size, supports forward and reverse insertion, data transmission, HDMI output supports video resolution up to 3840x2160p / 30Hz, output device HD display, LCD TV, etcProduct features:Chip: vl102 + ps176h + rtl5411 + gl3224Usb3.0a/f supports a maximum current of 0.9A and a maximum rate of 5GbpsBackward compatible with USB2.0 / 1.1Compatible with usb-c interface specificationSupport SD / TF card data storage functionBuilt in conversion chip, plug and play