820-2936-B 661-6158 Logic Boards 2.4 Ghz - 13inch MacBook Pro Late 2011 - A1278 NB-4114W
This is the 2.4GHz Core i5 Logic Board for the Macbook Pro 13" Late 2011.
EEE code: DTML,DTMR,DTMV,DTMY,DTN2,DTN5
Apple part number: 661-6158, 820-2936-B
661-6158 Logic Boards 2.4 Ghz - 13inch MacBook Pro Late 2011 - A1278 8202936B