Cables Direct NLUSB2-204C interface hub USB 2.0 480 Mbit/s

NEWlink 4 Port USB2.0 Hub - PSU

The four port USB 2.0 hub lets you connect up to four devices. While this does not come with a power supply there is a 5v power port should extra power be needed. It is compact and easily portable with dimensions of just 100 x 19 x 15mm.