CT51272BD1339.18FKD - Crucial 4GB DDR3-1333MHz PC3-10600 ECC Unbuffered CL9 240-Pin DIMM Dual Rank Memory Module

Technical Specs:
- Capacity: 4GB
- Memory Type: DDR3 SDRAM
- Memory Speed: 1333 MHz
- PC Rating: PC3-10600
- Error Checking: ECC
- Buffered/Unbuffered: Unbuffered
- CAS Latency: CL9
- Pin Count: 240
- Rank: Dual Rank

Helpful notes:
1. ECC memory is designed for servers and workstations, providing extra error detection and correction capabilities.
2. Dual rank memory modules provide better performance than single rank modules, especially in multitasking scenarios.
3. Make sure your motherboard supports DDR3 memory before purchasing this module.