For a list of all currently documented Ralink chipsets with specifications, see Ralink.
"G1700717015130", "V1.3 REV: A" is silkscreened on the board.
The WR850RLD is identical to the WR850RL aside from the antenna configuration. The WR850RLD has two RP-SMA connectors (one connected to the internal U.FL connector) while the WR850RL has two integral antenna connected to the internal U.FL connectors. There is also a vertical type (WR850RLD only) with two RP-SMA connectors which are both on the same side. All models have two external and one internal antenna.
The default IP and credentials are based on the submitted manual in the FCC documents.