Crucial CT6464AA667.8FB | 512MB DDR2-667MHz PC2-5300 non-ECC Unbuffered DIMM CL5 240-Pin DIMM Dual Rank Memory Module

Technical Specs:
- Capacity: 512MB
- Technology: DDR2 SDRAM
- Speed: 667MHz (PC2-5300)
- CAS Latency: CL5
- Pins: 240-pin DIMM
- Rank: Dual Rank
- Error Correction Code (ECC): Non-ECC
- Buffered/Unbuffered: Unbuffered

Helpful Notes:
1. This memory module is compatible with desktop computers that use DDR2 RAM.
2. The non-ECC feature means that it does not have error correction capabilities, but it is also less expensive.
3. Make sure to check your motherboard's specifications to ensure compatibility before purchasing.