Overview The Samsung M393A5143DB0-CPB is a 4GB DDR4-2133MHz ECC Registered memory module designed specifically for servers that require reliable and stable performance. Operating at a low voltage of 1.2 volts, it balances power efficiency with sufficient bandwidth to support virtualization, database management, and file sharing tasks. Its ECC (Error-Correcting Code) capability ensures data integrity by detecting and correcting single-bit errors, making it a dependable choice for critical server environments. Key features ECC support with an additional parity byte to detect and correct single-bit errors, reducing the risk of system crashes and data corruption. Registered DIMM design that reduces electrical load on the memory controller, allowing for stable operation when multiple modules are installed. Low power consumption at 1.2 volts, helping data centers and server rooms manage energy use without sacrificing performance. Single-rank 1Rx8 configuration that fits standard 288-pin RDIMM sockets on many Intel and AMD server motherboards. JEDEC-compliant timings for easy installation and automatic BIOS recognition, simplifying upgrades and replacements. Key specs Memory capacity: 4 GB Memory type: DDR4 ECC Registered Speed: 2133 MHz (PC4-17000) Voltage: 1.2 V Rank and organization: Single-rank 1Rx8 Pin count: 288-pin RDIMM Error correction: ECC with 8-bit parity signals Compatibility and installation This memory module is compatible with a wide range of server motherboards that support 288-pin RDIMM DDR4 ECC memory, including many Intel and AMD platforms. Installation is straightforward: simply insert the module into the appropriate DIMM slot, power cycle the system, and allow the BIOS to detect and configure the memory automatically. This makes it a practical option for expanding existing server capacity or replacing faulty modules in branch office or data center environments. Ideal uses and environments The Samsung M393A5143DB0-CPB is well suited to servers running web hosting, mail services, small office NAS systems, and virtualization workloads where uptime and data integrity are critical. Its ECC functionality and registered design provide the stability needed to avoid unplanned outages, making it a strong choice for IT administrators focused on maintaining continuous service and reliable performance in demanding server setups.