PHS-memory 4GB RAM Memory for Asus P9D-I DDR3 UDIMM ECC 1600MHz

This 4GB RAM is 100% compatible with the Asus P9D-I. Information regarding memory configuration: The following technical specifications should be considered in advance: Non-ECC or ECC (Error-Correction-Code) RAM can be installed in the device. Modules labeled as ECC have error correction. Non-ECC memory modules cannot be mixed with ECC memory. If a memory upgrade is to be made with the existing RAM, it must be checked which memory technology (non-ECC / ECC) is currently in use. A higher memory clock speed of the memory module will automatically adjust to the clock speed set by the system. This can especially be the case with larger capacities.