It won't fit your Surface Pro 8 very well if you use a protective case.[Surface Pro 8 4K HDMI Adapter]This HDMI hub supports video resolution up to 4K@ 30Hz, backwards support 2K/ 1080p/ 720p/ 480p/ 360p resolutions. You can enjoy an ultra-high-definition visual experience by extending you Surface Laptop to a 4K effect HDTV/monitor/projector.[High speed data transfer]Type C 3.0 Thunerbolt 4 supports 40Gbps data transmiion, also support Audio and Mic 2 in 1 port makes listening or talking a breeze. USB 3.0 port up to 5Gbps transfer. Extra USB 2.0 Ports are perfect for your keyboard and wirele device. The built-in TF (Micro-SD) slot allows for easy acce to files from TF memory cards with a super speed of up to 480Mbps. Compatible with TF, Micro-SD XC, Micro-SD HC card.[100W USB-C Power Delivery]This Surface Pro 8 acceories support USB C 100W pa-through power delivery. Aluminum case protect the shape. Special bevel-side and compact design of this USB hub perfectly match your Surface pro 8. Light-weight,easy to carry.color:SilverMaterial:Aluminum alloysize:88 x 33 x 9.5MMPackage Contents:1 x USB HUBOnly the above package content, other products are not included.Note: Light reflection 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.