The size of the Mini Portable Disk is smaller than a standard hard drive that is used inside a standard PC. Below are a few pictures of the MPD next to, and on top of a 40-Gig hard drive.
Next thing to do is to is hook it up to my machine. The machine I have it attached to is my Windows 2000 box. Once it was plugged in and turned on (the computer was already up and running), I had a new drive letter added under Windows Explorer after my CD-ROM drive. Under the device properties is shows up as a mass storage device.
The MPD has 2 LED's on the top of it. The first one is off if you just have the MPD on, that is used for is to tell if you have connection. I have only seen it glow green with the USB and Firewire cables connected. The 2nd LED glows red when it is turned on and when connected to the computer with USB. It will turn Blue when you are connect with Firewire. The Blue/Red led flickers when the drive is in use.
When attached with the included USB cable I had to load the USB mass storage drivers (comes with the OS). I have used FireWire external drives before so I had them already installed on my machine.
Nice thing about the MPD is that the size of the drive and its shell are a lot smaller than the generic ones you can find that hold 3.5" disk.
Both do have dual IEEE 1394 ports for daisy chaining Firewire devices together, and 12V DC power adapters on the back. As noted before, the MPD does have a battery, where the generic one shown below with the MPD does not. The MPD also has USB while the generic one does not.