CompatibilitySurface Pro 7+ Surface Pro 8 Surface Laptop Studio Surface Laptop 4 Surface Laptop 5 Surface Book 3 (13.5" & 15") Surface Laptop 3 Surface Pro 7 Surface Pro 9 Surface Pro 9 with 5G Supports dual 4k monitors at 30Hz: Surface Go 3 Surface Laptop Go 2 Surface Laptop Go Surface Book 2 Surface Laptop 2 Surface Laptop Surface Pro X Surface Pro 6 Surface Pro (5th Gen) Surface Go 2 Surface Go Not compatible with: Surface Pro 4 Surface Pro 3 Surface Book (1st Gen) Surface Studio 2+Dimensions5.12" x 2.75" x 1.18" (130 mm x 70 mm x 30 mm)Weight1.13 lb (515 g)Connections199 W power supply Supports dual 4K at 60 Hz Surface Connect cable (80 cm) 2 front-facing USB-C® (10 Gbps) (15 W) 2 rear-facing USB-C® (10 Gbps) video display enabled (7.5 W) 2 rear-facing USB-A 3.2 (10 Gbps) (7.5 W) 3.5 mm in/out audio jack 1 gigabit Ethernet Security lock support (Kensington compatible)