512MB DDR2 533 DIMM 4-4-4 (JETRAM) Product P/N: JM667QLJ-512M Features: Stable and Durable, Highly Compatible 100% tested Lifetime Warranty Specification: Memory Type: DDR2 Memory Pin and Module Type: 240Pin Long-DIMM Frequency: DDR2-533 Function: Unbuffer Non-ECC Memory