You've got to hand it to Hitachi; when it releases something called the G-Drive Mini, it makes a sincere effort to make it, but smaller.
All that it's really missing is a Kensington lock and an eSATA port, and otherwise it's all intact: the heat sink under the bottom; the dual FireWire 800 ports; a USB 2.0 port; a power switch; and even a power jack. We're not exactly sure why the last is there, as the drive is entirely powered via USB or FireWire, and, as a result, Hitachi includes no adapter in the box.
It's targeted at Mac users, and it fits the aesthetic perfectly. It even comes with its own carry case, firstly to protect the drive, and secondly so that the aluminium-on-aluminium love within your laptop bag is kept to a minimum. It even has an elastic band around it, should you want to pretend that you're Batman by attaching it to your utility belt.