Crucial CT519154 | 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 240-Pin DIMM Memory

Technical Specs:
- Type: DDR2 SDRAM
- Capacity: 4GB (2 x 2GB)
- Speed: 667MHz (PC2-5300)
- Latency Timings: CL5
- Technology: Unbuffered non-ECC
- Pins: 240-pin DIMM

Helpful Notes:
1. This memory kit is compatible with most desktop computers that use DDR2 memory.
2. The 667MHz speed provides a decent upgrade for older systems that support it.
3. The non-ECC and unbuffered design makes it suitable for home and office use, but not for servers or workstations that require error correction.