This is a mini High Speed USB 2.0 4 Port Hub with a stylish slim form factor. It easily turns a single USB ports into 4 for your laptop or PC/MAC. Although it is bus-powered hub, the included USB power cable can provide extra power from another USB port in case it is needed. It's great for most low-power USB peripherials, USB mouse, USB keyboard, etc. When higher power USB devices, ie. USB external HDD, USB external CD ROM, etc are connected, just simply connects the include USB power cable to provide more power.

Features:
Access up to 4 USB devices simultaneously.
4 Type A USB ports.
Super compact and lightweight, great for mobile users.
Compatible with USB 2.0 / 1.1/ 1.0, support full speed up to 480Mbps.
Plug & Play and Hot Swappable.
Per port overcurrent detection and protection.
LED Status Indicator.
Bus-powered.
Power cord is included to draw more power from other USB port if needed.
Chains up to 127 USB devices.