The Mecer 512MB DDR 184-Pin (PC400) RAM is a reliable memory module designed for desktop computers that support DDR SDRAM technology. Operating at 400MHz (PC3200) with a 2.5V power rating, this non-ECC, unbuffered module ensures stable performance and improved multitasking. With a CAS latency of CL3 and a 184-pin DIMM form factor, it provides a cost-effective upgrade for older systems needing enhanced speed and responsiveness.