HP Pro 3420, Maintenance & Service Manual, Page: 59 / 139

Memory
Description Spare part number
4 GB 646801-001
2 GB 646800-001
1 GB 647448-001
You must remove the system board cover to access the memory modules. The computer has two
memory slots.
Figure 7-20 Memory module location
The computer comes with double data rate 3 synchronous dynamic random access memory (DDR3-
SDRAM) small outline dual inline memory modules (SODIMMs).
The memory sockets on the system board can be populated with up to two industry-standard
SODIMMs. These memory sockets are populated with at least one preinstalled SODIMM. To achieve
the maximum memory support, you can populate the system board with up to 8 GB of memory.
For proper system operation, the SODIMMs must be:
●
industry-standard 204-pin
●
unbuffered non-ECC PC3-10600 DDR3-1333 MHz-compliant
●
1.5 volt DDR3-SDRAM SODIMMs
Memory 51