ELECOM Hub 4 Ports 1m with AC Adapter Compatible and Other Notebooks Nintendo Switch Compatible Black USB3.0 Self/Bus MacBook/Surface Pro/Chromebook

This is a self-powered/bus-powered USB hub that comes with an AC adapter. It supports USB 3.0, which achieves a transfer speed of 5 Gbps, approximately 10 times faster than conventional USB 2.0 (theoretical value). If your computer or device is USB 3.0 compatible, you can transfer large amounts of data at high speed. It can also be used with USB 2.0/1.1, so it can be directly connected to computers and devices that support USB 2.0/1.1. By connecting the included AC adapter and using the device in self-powered mode, you can enjoy stable power supply even when using devices that consume a lot of power, such as hard disk drives or DVD drives(※).