A 90.8 KB PDF titled only with the part number 2N5550, so no board, laptop model or revision can be matched.

Listed under schematics, this 188 KB PDF is named for the JEDEC part 2N5550 with an RE suffix whose meaning is unclear. No laptop, board code or revision is given.

Combined PDF of 49.6 KB whose name covers both 2N5550 and 2N5551, followed by a trailing 3 that may be an edition number but is not explained.