This product is way better than advertised by the manufacturer. First, it is easy to install and configure; it's a very nice looking piece of equipment, and can be rack mounted; and most of all, it works beautifully. It plays many more formats than advertised, e.g. DivX and VOB files(video), AC3 and DTS (audio). Also, the player is not limited to AVI files smaller than 2GB, as alluded to in the FAQ of the manual. I have used AVI files in excess of 5GB. The only issue I have with files of that size, though, is that they sometimes stall momentarily in scenes where there is heavy audio transmission, e.g. where there are very loud explosions. I should add that this is experienced when streaming across a wired network (even gigabit, which I have). But even then it is very seldom. I have never used the USB port.
To access files on your network, you need to install media server software. The player comes with a free one, called D-Link Media Server, which is very good. Of course, TVersity and PlayOn can be used, as well. I have used all three, but personally, I prefer D-Link's. You may, from time to time, not see it in the player's server list, and will have to restart it on your computer - but that is, again, very seldom. The player is not DLNA certified, and will not automatically browse your network. This is one shortcoming, I suppose. Most new products in this category are DLNA certified.
The player has all the video and audio outputs you'll ever need, e.g. composite, component and HDMI, along with analog two stereo, optical and coax digital cable. I'm using the wired Ethernet connection, as mentioned, as this is way better than wireless, especially for high bandwidth use.
With all these features, this product is exceptional value for money. Unfortunately, it is now discontinued.