Sync and manage your files faster than ever. Expands the limited USB-C connectivity of your laptop with one 4K HDMI port, 3 USB 3.0 ports, USB-C port, dual card reader slots. Transfer movies, music, and more in just seconds with 5 Gbps transfer speeds. Do more with a single hub.Tech SpecsInput:20V, 5AOutput USB-C:5V,900mAOutput USB 3.0:5V, 900mAOutput USB 2.0:5V, 500mAHDMI:4K@30HzUSB-C Transfer Rate:5GbpsUSB 3.0 Data Transfer Rate:5GbpsUSB 2.0 Data Transfer Rate:480MbpsSD/TF Data Transfer Rate:480MbpsOS Support:Windows 7/8/10, Mac OS 10.6 Above