AGPtek USB 3.0 Hub 4 Ports with On/Off Switch + AC Power Adapter For PC Laptop (VIA VL812 Chipset - USB 2.0 compatible) Expand by connecting up to 4 USB 3.0, 2.0, or 1.1 devices to any USB 2.0 or 3.0 capable computers Compatible with all Windows and Linux systems. Mac systems require latest Apple updates. Supports USB 3.0 transfer rate up to 5Gbps. Backwards compatible with all USB 2.0/1.1 devices and hosts. Powerfully 2A laptop-style power adapter with cable. Hub is not a standalone charger. When you using as a card reader hub,you can insert the USB flash disk directly, while when you want to charge your phone,you can plug the power adapter to power up. Its appearance covered with sleek blackand every port has a single LED. All 4 ports on one side to minimize cable clutter.