Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Wi-Fi Router Charts

Click for Wi-Fi Router Charts

Mesh System Charts

Click for Wi-Fi Mesh System Charts

Under The Covers

Figure 14: The DSM-520 with the cover off

Figure 14: The DSM-520 with the cover off

As you can see in Figure 14, D-Link didn't really need all that space inside the DSM-520's enclosure. They apparently just wanted the device to fit nicely in an entertainment center. Figure 15 is a close up of the DSM-520 motherboard.

Figure 15: The motherboard (click for full-resolution image).

Figure 15: The motherboard (click for full-resolution image).

You can see that the main CPU is a Sigma Designs EM8620l, which has an ARM core and does all the A/V heavy lifting as well. I couldn't find any specific information on it, but an ALPHA Networks WMP-G09 mini-pci card provides the wireless capabilities. A RealTek RTL8100BL provides the wired network support.

I'm always interested in what operating system these boxes run. With this one, it wasn't easy to figure out. The DSM-520 automatically downloads firmware revisions from D-Link so there wasn't a firmware file to dissect. A network port-scan of the box turned up only a few open ports used for the UPnP subsystem. I did get one of the ports to tell me who did the UPnP implementation on the box. The internal UPnP subsystem was evidently supplied by Redsonic. A network fingerprint scan identified the operating system as: "Linux 2.4.X|2.5.X," so the internal operating is most likely Linux-based, but a fingerprint scan can be misinterpreted.

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Don't Miss These

  • 1
  • 2