D-Link DGL-3420

"WL AP 2554 RA1" and "HW Rev A3" is silkscreened on the board in the FCC photos.

"WL AP 2554 RA1-B10" and "Rev V1.0" is silkscreened on (at least one) production model board.

Firmware notes

 * The firmware is compressed with arj
 * OS: ThreadX JADE/Green Hills Version G4.0.4.0
 * ar531x, 3.0.1.12, 18:00, 08 Dec, 2004, Build 1048 (dgl3420_firmware_100.bin)

Pinout
It's on the back of the unit, presumably.

Tx seems to be the large used pad next to the two large grounded pads - both of which are somewhat below the power connector. The output doesn't appear to be particularly useful.. a trait which may be shared with other Global Sun AR231x + ThreadX devices..

Boot log
aaa bbb EZ

Probable used PSU(s)
The power supply which seems to be bundled with US sold units looks to be a JENTEC JTA0302A. The connector is smaller than usual..