Mac Pro 4.1 5.1 4GB 1Rx8 DDR3-1866 PC3-14900E ECC EBJ40EG8BFWB
Pulled from Mac Pro 6.1 2014 machine

Compatible with Silver Mac Pro 2009 4.1 to 2012 5.1 (runs at 1066Mhz)

1st Class Recorded Post - Signature required