If you are looking for a useful hub with reliable quality and multi-ports, I will tell you that our hub will be your . We adopt plastic and aluminum material, can keep it for a long time. It allows you to have fast and easy data transfer. Features -Color: Grey. -Material: Plastic, aluminum. -Size: About 5.60X4.75X1.00cm/2.20X1.87X0.39in. - Function: Support 4K . -Transmission rate: 5GB. - Applicable equipment: output device with usb 3.1 function. - Expand the large screen through this item, connect to projectors, monitors, high-definition TVs, etc. - This adapter does not require any software, driver or complicated installation process. - Portable and aluminum design can provide better heat dissipation. - Special internal anti- design, no need to worry about interrupting the . - Using unique technology to protect the hard drive to run more smoothly and reliably. Package list: 1 x date hub