How to install 16GB of memory/ram into an HP Z400 Workstation - YouTube
Acquired Z400 & xw8400 - which 1 to upgrade + issues - HP Support Community - 7346518
HP Z400 RAM Upgrade– Cloud Ninjas
HP Z400 RAM Upgrade– Cloud Ninjas
Malaysia HP Z400 / Z420 / Z600 / Z620 / Z800 / Z820 Workstation Memory 8G 1866 ECC
HP Z400 Workstation Product Specifications | HP® Customer Support
Solved: Z400 RAM - Page 3 - HP Support Community - 6148900
Upgrading an hp z400 (six slots) - HP Support Community - 7156445
Upgrading an hp z400 (six slots) - HP Support Community - 7156445
CMS 8GB (2X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z400 Workstation for Server Only - B80 at Amazon.com
4GB EUDIMM Memory for HP Z400 Workstation DDR3L-1600 - Newegg.com
HP Z400 Workstation (6 DIMM Slots) 4GB RAM Memory Upgrade