The DSM-520's designers had an entertainment center form-factor in mind. It should fit right in with your DVD player, VCR, stereo, etc. Figure 1 from D-Link's installation manual shows the back of the device along with captions to sort out the numerous connection options.
Figure 1: The DSM-520's back panel
As you can see, the device has support for both wired and wireless networks. For entertainment center connections, the big attraction for me was the digital High-Definition Multimedia Interface (HDMI) port. Since I broke down and purchased an HDTV last year, this is the first device I've tested that could be digitally connected.
Figure 2 shows the IR remote for the DSM-520. I found it easy to use but not without a few problems. The biggest one was that it wasn't backlit; so using it in the dark could be a bit of an issue.
Figure 2: The Remote
But the button layout was intuitive enough that it shouldn't be much of a problem. Along with the standard buttons you'd find on any multi-function remote, this one came with special buttons for Music, Photo, Video, On-Line and USB content.