Apple 661-00149 | 4GB DDR3-1866MHz PC3-14900 non-ECC Unbuffered CL13 204-Pin SoDIMM 1.35V Low Voltage Single Rank Memory Module

Technical Specs:
- Capacity: 4GB
- Memory Type: DDR3 SDRAM
- Memory Speed: 1866 MHz
- Pin Count: 204-pin
- CAS Latency: CL13
- Error Correction Code: Non-ECC
- Buffered/Unbuffered: Unbuffered
- Rank: Single
- Voltage: 1.35V

Helpful Notes:
1. This memory module is compatible with select Apple MacBook Pro and iMac models.
2. The low voltage design helps to reduce power consumption and heat generation.
3. Non-ECC memory is generally less expensive than ECC memory, but does not provide error correction.