The Matrox DS1 is a practical way of taking the hassle out of connecting multiple things to your MacBook. It connects via Thunderbolt, and provides connectivity for audio, gigabit ethernet, USB 3.0, 2x USB 2.0 and monitors via a single-link DVI port. Leave that on your work desk, and you just need to connect one cable and you're ready to go, instead of needing to connect each individual cable each time.
It's a compact box made out of aluminium, measuring about 20 cm x 9 cm. It's powered by an external adapter connected to the back of the device, and it makes it possible to connect a Full HD monitor.
It's a clever design. By putting most of the connectors on the back, you can avoid clutter on your desk and keep most cables out of sight. The two frontal connectors, USB 3.0 and Thunderbolt, are easily accessible for connecting a USB stick or external hard disk.
The DS1 is a very practical accessory for the Apple MacBook Air, even more so if you own an older one. Aside from combining all connectors into one, it gives you USB 3.0 and a permanent network port. Only the latest generation Apple products come with USB 3.0, a standard that's used on an increasing number of external hard disks and memory sticks.
The two USB ports on the back can be used for keyboard and mouse, and you can leave your speakers or headset connected permanently. When you connect the Thunderbolt cable you have instant access to everything, all your peripheral devices and your monitor.