It wont 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/ 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 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 (Micro-SD) slot allows for easy access 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 accessories support USB C 100W pass-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:Silver
Material:Aluminum alloy
size:88 x 33 x 9.5MM

Package Contents:
1 x USB HUB