Features: 1.Perfectly Compatible: USB C hub is only compatible with Surface Pro 8 9 X laptops. Turns 2 USB C ports into 7 ports (HD Multimedia Interface, RJ45, USB3.0 x 2, USB C, Storage Card Slot, Memory Card Slot), plug and play, no drivers required. 2.High Resolution: The USB C hub supports video resolutions up to 4K 60Hz 30Hz. Freely display high resolution 4K UHD 60Hz 30Hz or Full HD 1080P video from your laptop to your HDTV, monitor or projector via the HD Multimedia Interface port, backwards supporting 2K 1080p 720p 480p 360p resolution. 3.Fast Data Transfer: Ultra fast 5Gbps data transfer via Dual USB C expansion hub via USB 3.0 port hub. The transfer speed is very fast. It can help you save a lot of time. USB 2.0 compatible Designed for keyboard and mouse. 4.Direct Power Supply, Practical Accessories: Dual USB C expansion hub supports USB C 100W direct power supply. Aluminum design for fast heat dissipation. This docking station is handy for Surface Pro 8 9 X laptop accessories. 5.Expansion Function: USB C hub allows you to expand 2 monitors. You can do different jobs on different monitors. Support up to 4k 60Hz 30Hz displays via the HD Multimedia Interface port or up to 4K 30Hz displays via the USB C 4 port. specification:Item Type: Dual USB C Expansion Hub Material: Aluminum Alloy Color: Silver Interface: HD Multimedia Interface, RJ45, USB3.0 x 2, USB C, Storage Card Slot, Memory Card Slot Video Output: HD Multimedia Interface 3840 x 2160 60Hz 30Hz 1080P 60Hz PD: Maximum Support 100W Network Port: 1000M 100M Backward Compatible Card Reading: Single Disk SD SDHC SDXC Micro Storage Card Reading (Does Not Include Card, Maximum Support 512GB) Applicable Models: for Surface Pro 8 9 X PackageList:1 x DualUSBCExpansionHub