HP Pavilion a387x Desktop PC - Manual (Page 122)

114 user’s guide
adding memory
The motherboard contains sockets for DDR DIMMs (double data rate dual in-
line memory modules).
To determine the memory capacity and speed of the memory module your PC
model uses, and for specific memory module information and specifications
go to the Web site listed in your Warranty & Support Guide and click the
Support link.
The motherboard contains 184-pin DDR DIMM sockets. The number of sockets
depends on which model you have.
DDR DIMM
WARNING: Using the wrong type of memory module could damage
the system.
about installing ddr dimms
DDR DIMMs must be 184-pin unbuffered DDR SDRAM (double data rate
synchronous dynamic random access memory). The HP Pavilion ships with one
or more memory modules, but you can replace the existing memory modules
with higher-capacity ones. You can install 128 MB, 256 MB, 512 MB, or 1024 MB
(1GB) memory modules in the PC.
NOTE: Some memory configurations vary, depending on your PC model.
512 MB and 1024 MB DDR DIMM memory modules are not compatible with
all PC models.