Crucial CT51272AF667.K36F0N8 | 4GB DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory Module

Technical Specs:
- Capacity: 4GB
- Memory Type: DDR2 SDRAM
- Memory Speed: 667MHz (PC2-5300)
- Error Checking: ECC
- Buffered/Unbuffered: Fully Buffered
- CAS Latency: CL5
- Pin Count: 240-pin DIMM
- Rank: Dual Rank

Helpful Notes:
1. This memory module is designed for servers and workstations that require ECC memory.
2. Fully buffered memory provides increased reliability and performance compared to unbuffered memory.
3. Make sure to check your motherboard's compatibility with DDR2 memory before purchasing.