Micron MT9JSF51272AZ-1G9E2ZG | 4GB DDR3-1866MHz PC3-14900 ECC Unbuffered CL13 240-Pin DIMM Single Rank Memory Module

1. Memory Type: DDR3 SDRAM
2. Memory Size: 4GB
3. Memory Speed: 1866MHz
4. Memory Standard: PC3-14900
5. Error Correction Code (ECC): ECC
6. Buffered/Unbuffered: Unbuffered
7. CAS Latency: CL13
8. Pin Count: 240-pin
9. Rank: Single
10. Voltage: 1.5V
11. Form Factor: DIMM
12. Module Configuration: 512M x 72

Helpful Notes:
1. This memory module is designed for server and workstation use.
2. ECC memory is more reliable than non-ECC memory as it can detect and correct errors in real-time.
3. Make sure to check your motherboard's compatibility with this specific memory module before purchasing.