I wouldn't recomend this model if you have enough USB ports. Because they have the same thing with a USB connection and it's bus powered. But if you don't have a free usb and a spare serial and PS/2, go for it...
careful with USB (or should that be ups ) GPS devices. Windows XP, and all the MS routing softwares (autoroute, mappoint etc) have problems with USB GPS devices, even if the USB simulates a serial port.
I bought a serial GPS for this very reason.
Car changed for TVR Griffith 500, so computer de-installed. Using a Dension 100ix w/60Gb HD unit in the interim.
I've not noticed any problems with XP and USB ports. I use all sorts of devices without problems. Including a Haicom GPS. I've stopped using Microsoft products, not because of problems with the GPS, but because they don't give directions and only update the position every 15 secs.
I'm now selling Infomap Navigator Europe bundled with a USB monitor for £124.99 +p&p. Have a look here. A much better solution.
I saw on one of the MapPoint portals that you can hack the registry so that Microsoft products will update every 3 seconds (or whatever you want toset it to). I don't seem to have the link on this computer (sorry).