SPEED LINK SNAPPY SLIM is a 4-port USB hub. It's really compact, so you can easily transport it. This HUB has an integrated 8cm USB connector for connecting to a computer or laptop. It's just what you need if the number of USB ports on your computer is insufficient, and you find yourself constantly unplugging and re-connect your devices. SPEED LINK SNAPPY SLIM USB Hub has overvoltage protection and is safe for your laptop. It has four USB 2.0 ports with a transfer rate of up to 480Mbps. It is compatible with desktop computers, laptops, and also with Mac computers.