Unfortunately, the DIR-510L doesn't lend itself to easy disassembly, so for inside photos and component ID we were forced to rely on the FCC photos. As is often the case, the photos were somewhat blurry, but here are a couple we picked out.
D-Link DIR-510L PCB
We were able to determine that the CPU is a Mediatek MT7620A using a detail photo not shown. Note there are two 2.4 GHz antennas for its 2x2 radio and only one antenna for the 1x1 5 GHz side.
D-Link DIR-510L Battery
The chart below was compiled from data found on the D-Link web site.
If you browsed through the gallery for the user interface, you already know that the product is fairly simple. There are some features, such as UPnP, WMM and VPN passthrough for PPTP, L2TP and IPsec that I found references to in the user manual that you can download here, but are not surfaced in the user interface.
Since the DIR-510L includes a DLNA media server, I decided to test it with my WD TV Live media streamer. The streamer also has WPS capabilities, so I thought I'd test that feature, too. I pressed the WPS button on the DIR-510L and then selected "Connect" on my WD TV Live. It took slightly under 18 seconds for the secure wireless connection to be set up.
The WD TV Live found the DIR-510L media server and was able to play back video, photos and music files as expected.
During the bulk of my review, I used the DIR-510L in the router mode. However, I also wanted to test the Hotspot mode. In this mode, the WAN connection comes from another Wi-Fi network. Configuring the Hotspot mode isn't difficult at all.
First, to change from router mode to any other type of internet connection, just disconnect the Ethernet cable. When you go to the home page, the UI will show you that the internet connection is down and, when you click on the internet icon, it will immediately start to scan for nearby Wi-Fi networks. Select a network and enter in the network key and the router will reboot.
When it comes back up, you should have an internet connection using the selected Wi-Fi network. Of course, if you are using a network that requires payment and/or authentication, you'll need to open your browser and handle those tasks on your own. When you're done, a configuration for that connection will automatically be stored as a new Internet Profile in the settings. The gallery below walks you through the Hotspot configuration process.
The DIR-510L supports D-Link's Shareport file sharing, with companion iOS and Android apps. I downloaded the iOS app, but wasn't able to successfully configure it. Fortunately, you also have web access to your mounted USB storage on port 8181 (the default is http://192.168.0.1:8181). But the browser based interface offers only rudimentary access.
You can see your multimedia files sorted by type, but you'll just see a listing dump. You can also choose a tree view. For me, Shareport never has been, and probably never will be, a reason to buy a router. The composite image below gives you an idea of what the web-based UI for Shareport looks like.