661-5309 - Apple 4GB DDR3-1066MHz PC3-8500 non-ECC Unbuffered CL7 204-Pin SoDIMM Dual Rank Memory Module for MacBook

Technical Specs:
- Capacity: 4GB
- Memory Type: DDR3 SDRAM
- Memory Speed: 1066 MHz
- Form Factor: SO-DIMM 204-pin
- CAS Latency: CL7
- Error Correction Code: Non-ECC
- Rank: Dual Rank
- Voltage: 1.5V

Helpful Notes:
- This memory module is compatible with MacBook models released in 2010 and 2011.
- Upgrading your MacBook's memory can improve its performance and multitasking capabilities.
- Non-ECC memory is suitable for personal use, but not recommended for critical applications that require error correction.