Kingston 2 GB SO-DIMM 667 MHz DDR3 Memory (ASU1333D3S9DR8/2G) for sale online | eBay
Amazon.com: OWC 2GB (2 x 1GB) PC5300 DDR2 667MHz SO-DIMMs Memory Compatible with MacBook/MacBook Pro, iMac, and Mac Mini Models (OWC5300DDR2S2GP) : Everything Else
Kingston 2 GB DDR2 SDRAM Memory Module 2 GB (1 x 2 GB) 667MHz DDR2 SDRAM 200pin KTT667D2/2G at Amazon.com
KTA-MP667AK2/2G-G Kingston 1GB DDR2 Fully Buffered Server Memory