this HooToo? Bus-Powered USB 3.0 4 Port Compact Hub is a portable and compact USB extension that allows you to retain SuperSpeed access to your devices. Keep your desk top neat and tidy!

Instant expansion:
Plug-and-Play device with no drivers or power adapter required. 4 USB 3.0 SuperSpeed ports supply you with transfer rates of up to 5Gbps.

Compact Design:
Compact and portable size is fit for travel and keep your desk top neat and clean. Draw power directly from computer. No additional power adapter needed.

Special Port Design:
Horizontal ports design avoids external devices crammed and makes full use of each port.

System Requirements:
Windows XP / Vista / 7 / 8, Mac OS 9.1 and above
Mac OS X Lion 10.7.4 users should upgrade to Mountain Lion 10.8.2 or later to avoid unstable connections.
2012 June MacBook Air and MacBook Pro users can download "MacBook Air and MacBook Pro Update 2.0" from the official Apple website as improvement of USB 3.0 performance and compatibility.
2012 Mac Mini and 2012 Macbook Pro with Retina Display are currently not recommended for use with this product because the unstable performance

Additional Notes:
- Some USB 3.0 devices require direct connection to host ports.
- To ensure a stable connection, don't use this hub with high power consumption devices (those exceeding a combined current of 0.9 Amps among all ports) such as some large-capacity hard drives.
- 2.4GHz wireless devices such as wireless keyboard and mouse adapters may not work around USB 3.0 ports. Try using a USB 2.0 connection.