It won't fit your Surface Pro 8 very well if you use a protective case.[Surface Pro 8 4K Adapter]This hub supports video resolution up to 4K 30Hz, backwards support 2K or 1080p or 720p or 480p or 360p resolutions. You can enjoy an ultra-high-definition visual experience by extending you Surface Laptop to a 4K effect HDTV or monitor or projector.[High speed data transfer]Type C 3.0 Thunerbolt 4 supports 40Gbps data transmission, 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 wireless device. The built-in TF (-SD) slot allows for easy access to files from TF memory cards with a super speed of up to 480Mbps. Compatible with TF, -SD XC, -SD card.[100W USB-C Delivery]This Surface Pro 8 accessories support USB C 100W pass-through 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.