Apple 661-3978 | 1GB DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 200-Pin SoDIMM Dual Rank Memory Module for MacBook Pro A1151

Technical Specs:
- Capacity: 1GB
- Memory Type: DDR2 SDRAM
- Speed: 667MHz (PC2-5300)
- Form Factor: 200-pin SO-DIMM
- CAS Latency: CL5
- Rank: Dual Rank
- Error Correction: Non-ECC
- Buffered/Unbuffered: Unbuffered

Helpful Notes:
1. This memory module is compatible with MacBook Pro A1151.
2. Non-ECC memory is faster and less expensive than ECC memory but does not provide error checking.
3. Dual rank memory modules have two sets of memory chips, which can improve memory performance.