This product is a PC2700U-25330 DDR-400 RAM kit from Nanya, consisting of two 512 MB memory modules. The RAM is DDR1 SDRAM with a bus speed of PC2700U-25330 and a total capacity of 1 GB. The memory chips are ProMOS and there is no California Prop 65 warning. The modules are unregistered, non-ECC, and unbuffered, making them suitable for desktop computers. The memory has a standard profile and is designed in a DIMM form factor with 184 pins. Made in China, this RAM kit provides reliable and efficient performance for computer systems.