Kingston Technology 4 GB Memory for Select Apple Imac's and Macbooks Single (Not a kit) 1066 MHz (PC3 8500) 204-Pin DDR3 SO-DIMM KTA- MB1066/4G at Amazon.com
Arch Memory 4GB 204-Pin DDR3 1600 MHz So-dimm RAM for HP ProBook 4540s at Amazon.com
A-Tech 4GB RAM for ASUS Mini PC PN60 | DDR4 2666MHz PC4-21300 Non ECC SO- DIMM 1.2V - Laptop & Notebook Memory Upgrade Module at Amazon.com
Kingston ValueRAM 4GB 667MHz DDR2 ECC CL5 DIMM (Kit of 2) Desktop Memory at Amazon.com
Crucial 4GB Single DDR3-1600 (PC3-12800) SODIMM 204-Pin High Density Memory CT51264BF160BJ at Amazon.com
OWC 4GB PC12800 DDR3L 1600MHz SO-DIMM Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S4GB) at Amazon.com
Kuesuny 8GB Kit (2 x 4GB) DDR3-1600 SODIMM, DDR3L PC3-12800 CL11 Non ECC Unbuffered 204-Pin 1.35V/1.5V 2RX8 SO-DIMM Notebook Laptop RAM Memory at Amazon.com
MemoryMasters 4GB (2 X 2GB) DDR2 533MHz PC2-4200 240-pin Memory RAM DIMM for Desktop PC at Amazon.com
4GB Memory Upgrade for HP Pavilion Slimline s5-1414 DDR3 P3-12800 1600MHz Non-ECC Desktop DIMM RAM Upgrade (PARTS-QUICK Brand) at Amazon.com