IEI Integration PPC-5xxx-9455 v1.00 - Manual (Page 191)

PPC-5xxx-9455 Panel PC
Page 173
F.3 Compatible Memory Modules
NOTE:
The memory modules listed below have been tested on the
PPC-5xxx-9455 other memory modules that comply with the
specifications may also work on the PPC-5xxx-9455 but have not been
tested.
The following memory modules have been successfully tested on the PPC-5xxx-9455.
Manufacturer Model Capacity Speed Type
Transcend 507303-0233 1.0 GB 667 MHz DDR2