For a list of all currently documented Realtek chipsets with specifications, see Realtek.
"G1700517103130 V1.3 OSP" is silkscreened on the board.
The WR514R2 is identical to the WR514RD2 aside from the antenna configuration. The WR514RD2 has an RP-SMA connector (connected via the internal U.FL connector) while the WR514R2 has an integral antenna connected to the internal U.FL connector.
Test report says power adapter used is 12V 1.0A. The 'manual' says 9V.