4in1 expansion dock adopts ABS shell to accelerate heat dissipation and stable performance.PD charging port: charging while playing without power loss, supports 87W fast charging.Support SD, TF3.0 card slots, dual cards can be read at the same time. interface, watching 4K HD TV, interface supports 3840*2160/30Hz resolution to give you a cinemalike experience.Small size and portable, easy to travel, easy to put in a briefcase, no burden on you.Interface: TYPE-C maleLine length: 12.5CMUSB specification: USB3.0*1+2.0*1USB3.0 transfer rate: 5.0Gbps (640MB/s)USB2.0 transfer rate: 480Mbps (that is, 60MB/s)PD: 87W resolution: 4K 30hzMain control chip: AG9311Product weight: 322gColour: grayMaterial: ABSSize: 8.3x2.8x1.1CMPackage Contents:1 * 4 in 1 docking stationOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.