Sun X5279A-Z | 4GB Kit (2 X 2GB) PC2-5300 DDR2-667MHz ECC Unbuffered CL5 240-Pin DIMM Memory

1. Memory Type: DDR2 SDRAM
2. Memory Size: 4GB (2 x 2GB)
3. Memory Speed: 667MHz
4. CAS Latency: CL5
5. Error Checking: ECC
6. Buffered/Unbuffered: Unbuffered
7. Pin Count: 240-pin
8. Voltage: 1.8V
9. Form Factor: DIMM
10. Number of Modules: 2
11. Manufacturer: Sun Microsystems
12. Compatibility: Sun Fire X2250, X4150, X4450, X4550, X4600 M2

Helpful Notes:
1. This memory kit is specifically designed for use in Sun Microsystems servers.
2. ECC memory is more reliable than non-ECC memory, as it can detect and correct errors in real-time.
3. The 240-pin DIMM form factor is commonly used in server and workstation systems.