Add up to 4 devices quickly and easily with the SABRENT USB 2. 0 Rotatable Hub. Great for newer notebooks that come with a limited number of ports. Maximize your time by obtaining access to plug in multiple USB devices instead of having to choose just one . Achieve full 480 Mbps on each port, or daisy chain multiple hubs to a maximum of 127 devices. Fully backwards compatible with the USB 1. 1 products. Please Note: For a stable connection, the devices connected to the 4 Port Hub must not exceed a combined current of 5 volts 500mAh. External hard drives should be connected to an external power source. This 4 Port hub will not charge your devices, it will only sync them. Package contents: SABRENT Rotatable 4 Port USB 2. 0 HUB With the SABRENT (CB 2060) you can extend the cable connection between your computer (Mac/PC) and a keyboard, mouse, camera, external hard drive, printer, VoIP phone or other USB enabled devices. Ideal for lengthening a device connection, when existing cables are too short, and giving you the convenience to move away from your desktop while using your connected devices. Features shielding that provides protection against noise from electromagnetic and radio frequency signals, keeping your signal clear with less loss of bandwidth for higher performance. Package contents: 6 Feet USB 2.0 Extension Cable