4GB Mac Memory Upgrade DDR3-1333 PC3-10600 SODIMM

661-6037 4GB, SDRAM, 1333, SO-DIMM, DDR3 - Mid 2011 - A1347 Mac Mini, Mini Server NB-1978W
This is a 4GB RAM Upgrade for various Mac models that use PC3-10600 SODIMM chips.
Apple part number: 661-6037

661-6037 4GB, SDRAM, 1333, SO-DIMM, DDR3 - Mid 2011 - A1347 Mac Mini, Mini Server