8GB Total memory using 2pc of 4GB 1333MHz Module 240pin dimm DDR3 10600. Lifetime warranty for exchange by Computer Memory Solutions Brand Computer Memory Solutions We don't use OEM or Generic modules to avoid incompatibility issues. Guaranteed to work or you get all of your money back including shipping. 30 DAY MONEY BACK GUARANTEE Max Memory: 8GB
Sockets: 2 MODULES MAY BE INSTALLED ONE AT A TIME; however, they must be added in like pairs to take advantage of dual-channel support. If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). Maximum configurations require a 64-bit operating system. Per HP documentation, system supports DDR3-1333 and 1066 modules but memory Bus runs at 1066MHz.
Compatible with: HP/Compaq Business Desktop 4000 Pro (SFF) A7H78UT; A7H79UT; A7L22UT; B8V04UT; LA069UT; LA071UT; LA072UT