OWC 4GB DDR3 1333 CL9 1.5V 204-pin SODIMM memory upgrade

Single-module 4 GB DDR3 SODIMM

This 204-pin DDR3 module delivers 4 GB at 1333 MHz with CL9 latency and 1.5 V operation. It is built to JEDEC and RoHS standards and validated for the HP ProBook 4230s, 4310s, 4320s, 4325s and 4326s. The unbuffered, non-ECC design installs without tools in most compatible notebooks.

Suits owners of listed ProBooks needing

Builders who require ECC, registered DIMMs, a different voltage or a higher capacity per module should look elsewhere. Systems that only accept 1.35 V low-voltage DDR3 cannot use this stick. The 2Rx8 rank layout may not work in platforms limited to single-rank modules.

2Rx8 rank configuration

The module uses a dual-rank 2Rx8 organisation, which determines whether the memory controller can address the full 4 GB. Check the service manual for your specific ProBook model to confirm dual-rank support before purchase.