Very similar router as WR841ND just with POE support.
There is a topic about this router (google translate it): http://openrouter.info/forum/viewtopic.php?t=2790&p=30893
Working images (tested wifi multi-net, bridge networking — AA 12.09) here: http://dl.eko.one.pl/barrier_breaker/ar71xx/ — seems to be 841ND's with id modified.
WikiDevi page: http://wikidevi.com/wiki/TP-LINK_TL-WR843ND
Main difference is that this router has 34063 UM-G1 445TA8 DC voltage regulator whose specifications show 40V DC as maximum allowed voltage, but recommended maximum voltage is 36V. So you can power this router with wide range of voltage: 5-36V DC.
Here is an image of DC voltage regulator: