Color: gray Specification Gray aluminum alloy shell LWH 60*55*10mm (2.3*2.1*0.4 inch), cable 130mm (0.5 inch), Mini size and multi-function. Compatible Devices Laptops & Tablets & Smartphones with USB Type-C ports (Thunderbolt 3 and 4 compatible), such as MacBook Pro & Air 2021/2020/2019/2018, iPad Pro 2021/2018, ChromeBook, Surface Book, Galaxy S21/S20/ S10 etc. USB C Charging Port You can connect usb c charger cable to quickly charge Laptops & Tablets & smartphones, the maximum charging PD 27W. USB Port There are USB3.0 port (USB3.1 gen 1) and USB2.0 port, which support data transmission, OTG, and can also connect mouse, keyboard, flash drive, mobile hard disk, usb card reader, and other accessories. HDMI Port HDMI2.1 standard is backward compatible with HDMI2.0, supports output resolution 4K, compatible with 2K, 1080P, 720P, etc.