Replace the Memory | HP Z2 SFF G4 and Z240 SFF Workstations | HP - YouTube
RAM upgrade for an HP z240 - HP Support Community - 6903727
4GB Memory HP Workstation Z240 DDR4 RAM Upgrade
RAM upgrade for an HP z240 - HP Support Community - 6903727
Amazon.com: HP Z240 Small Form Factor Worksation PC, Intel Core i5-7500 up to 3.8GHz, 16GB DDR4 RAM, 1TB SSD, Wireless WiFi, Bluetooth, Keyboard, Mouse, Windows 10 Pro 64(Renewed) : Electronics
RAM upgrade for an HP z240 - HP Support Community - 6903727