Dell A1581490 | 512MB PC2-5300 DDR2-667MHz non-ECC Unbuffered CL5 200-Pin SO-DIMM Dual Rank Memory Module for XPS M1730

Technical Specs:
- Memory Type: DDR2 SDRAM
- Capacity: 512MB
- Speed: 667MHz
- Form Factor: 200-pin SO-DIMM
- CAS Latency: CL5
- Error Correction Code: Non-ECC
- Rank: Dual Rank
- Voltage: 1.8V

Helpful Notes:
1. This memory module is compatible with the Dell XPS M1730 laptop.
2. Non-ECC memory is faster and less expensive than ECC memory, but it does not provide error correction.
3. Dual rank memory modules provide better performance than single rank modules, but they may be more expensive.