HooToo HT-UH005 USB 3.0 4-Port Hub Ultra-Slim (5V/2A Power Adapter, Latest VIA VL812-B2 Chipset & 9081 Firmware, 2.3 fe The newest chipset version: VIA VL812-B2 allows this hub perform stably and perfectly compatible with your Windows, Mac OS or Linux systems Enough power supply: 5V/2A power adapter can provide enough capacity power supply to your high-power devices as a current enhancement if needed. Plug and play. 4 ports USB hub supports hot-swap function and no need to install drive. High speed: USB 3.0 transfer rate maximum to 5Gbps with both power adapter and USB cable connected, downward compatible USB 2.0/1.1. 4-Port Hub