8GB SK-HYNIX DDR3 PC3L  SODIMM RAM Memory 

OEM FOR MACS/LAPTOPS

2 x 4GB 1Rx8 DR3L 1600MHz / PC3L 12800S -11-13-B4

PB NA AA  SODIMM MAC 204-Pin

Part Number: HMT451S6AFR8A - PB NA AA 1431

2 X 4GB SET 1431

Form Factor: SODIMM MAC/LAPTOP

Specs: DDR3 1600MHZ PC3L-12800S 

ECC: NON-ECC

DIMM Type: Unbuffered

Tested & Working.

Used but still like new condition and in full working order.