As others before me, I got this rather than get the rather pricey (in my opinion) Microsoft X-Box adapter. The unit is very slick and sits nicely on top of the X-Box 360. It can be powered via 2 x USB ports from the X-Box with the lead provided (my preferred solution) or via the mains adapter.
So, what's the catch?
Well, first thing to note is this is not the UK version of the device hence you get an adapter plug seperately. This is really not an issue so don't be put off by it. Second, the paperwork in the box is not in english. Again, not a problem as the english version can be found on the CD (or downloaded from Belkin come to that).
My biggest issue was with the set-up of the device. Like any sensible(!) individual, my wireless network is secured so the easy 'press a button' option to configure the device was not an option. So instead I would use the Wizard on the accompanying CD which was supposed to make all of that a piece of cake. Unfortunately the software failed to recognise that the the device had been attached to my XP PC so I had to follow the manual instructions. These were okay but I would imagine could be a bit daunting to to general PC user. Following the instructions *carefully* I was able to complete the set up and get the device to bridge the connection between the PC and the wireless router. Once I had done that, I simply unplugged it from the PC and plugged into into the X-Box and 'hey-presto', instant connection to my network and X-Box live.
So far I have been really pleased with the reliability and whilst I have had the occasional drop-out, I suspect that has more to do with my ageing router which needs replacing (next on the list!). So, my verdict is this is a great 'cheap' alternative to the Microsoft offering for gaming but as this is basically a wireless bridge it's a good choice for connecting any device with a network port to your wireless network too! If it wasn't for the slightly clunky configuration I had to go through (the wizard may work for you) then this would have got 5 stars from me without doubt.