The adapter connects a USB-A/C computer/notebook to up to two HDMI monitors. The integrated 0.11 m cable can connect the adapter directly to a computer/notebook. External video and graphics card Connect up to two HDMI monitors for an extended or mirrored desktop Supports resolutions up to 3840 x 2160 pixels at 30 Hz (one monitor), For 2 monitors, first: 3840 x 2160 pixels at 30 Hz, second: 1920 x 1080 at 60 Hz Compatible with Windows 7/8.1/10/11, Chrome OS, macOS Mojave (10.14), macOS Catalina (10.15), macOS Big Sur (11.0), macOS Monterey (12.0), macOS Ventura (13.0) Chipset: Silicon Motion - SM768 Ports: USB-A/C male - 2 x HDMI female