Just another data point. My:
17" Unibody MacBookPro8,3 Early 2011, Model A1297
requires the DC-IN board: 820-2361-A
Amazon sent the 'Power Jack Board 820-2565-A' by mistake. The second hole is off by about 2mm, and thus not possible to secure with the second screw. Chip and layout looked identical (but no way to know). Under deadline pressure, I proceeded with the install. Fixed and booted. So far so good. At first was concerned about DC-IN board rotating, but the pull of the magnetic connector does not apply inward pressure to the board.