?2 X USB 3.0 ports? Ultra-speed USB 3.0 support up to 5Gbps , 10 times faster than USB 2.0, Compliant with USB 2.0(48Mbps)and 12Mbp transfer rate, saving your time remarkably ?4K HDMI 1080P@60Hz? Swicth a high definition from your Surface Go to monitor, projector, or LCD that provide a mirror screen for you, HDMI resolution up to 4K/2K@60Hz output. Note: 4K capable display and 4K capable HDMI cable are required to achieve 3840 x 2160 resolution which isn't included ?2 USB Type C?Type C Port(have only data transfer function) can be connected to With Type C Mouse/Keyboard/U Disk, HardDisk Enclosure and other Type C Devices. The side Type C Female has only PD charging function. Type C PD Charging Port are implemented Multiple quick charge protocols and up to 60W power transmission. Support power Down mode and low stand-by current and all standard power profiles ?3.5mm audio output?The headphone male head to headphone female head is independent. Currently most Surface Go USB hub sell on Amazon will cover the audio port, only this USB C hub have a headphone jack International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.