CORSAIR VSA4GSDSKIT667C4 Memory Retail Model: VSA4GSDSKIT667C4 Type:200-Pin DDR2 SO-DIMM Compatibility For Apple Notebook Capacity 4GB (2 x 2GB) Speed DDR2 667 (PC2 5300) Cas Latency 4 Timing 4-4-4-12 Heat Spreader No Specifications Compatible with all Intel-based Apple MacBook, MacBook Pro, iMac (17",20",24") and MacMini systems