Apple Memory Module 4GB 1066MHz DDR3 (PC3-8500) - 2x2GB SO-DIMMs at Amazon .com
A-Tech 16GB (4 x 4GB) Max RAM for HP Compaq 6000 Pro - (Small Form Factor & Microtower) - DDR3 1066MHz PC3-8500 Non-ECC DIMM Memory Upgrade Kit at Amazon.com
MICRON MT36JSZF51272PDZ-1G1F1AB PC3-8500R DDR3 1066 4GB ECC REG 4RX8 (FOR SERVER ONLY) at Amazon.com
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
OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com