I had to open up my WNDR3700v2 recently (did something stupid and needed serial) and I noticed it's a bit different than the v1 pictures on the wiki (http://wiki.openwrt.org/toh/netgear/wnd … ntenna.mod). I initially wasn't going to bother with the antenna mod because I don't have the skills/tools to solder SMD components, but it looks like the v2 has normal U.FL connectors for 2 of the 4 antennas.
Here's some photos: http://imgur.com/a/4CHu9
PJ5 and PJ6 and the same as in the v1 but PJ2 was replace as AJ1 and PJ4 was replaces as AJ2. Also there are two small board antennas stuck to the top of the case and connected to AJ1/2.
Since they already have antennas connected, I assume it would be OK to attach a U.FL to SMA connector without having to make any modifications? Also, would these be for the 2.4Ghz, 5Ghz or both?