820-2827-B 922-9972 Input / Output Board for 11inch A1370 MacBook Air Mid 2011 NB-1387W
This is the I/O Board for the MacBook Air released in 2011.
Apple part number:922-9972, 820-2827-B
922-9972 Input / Output Board for 11inch A1370 MacBook Air Mid 2011 8202827B