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Guaranteed compatible upgrades for:

HP/Compaq 300 Series Desktop 390-0xxx Series

Crucial 16GB (1x 16GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Crucial 16GB (1x 16GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Save $15
Crucial 8GB (1x 8GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Crucial 8GB (1x 8GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Save $39.99
Crucial 4GB (1x 4GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Crucial 4GB (1x 4GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Save $13
Transcend JetRam 4GB (1x 4GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module

Transcend JetRam 4GB (1x 4GB) DDR4-2666 PC4-21300 1.2V SR x8 288-pin UDIMM RAM Module
System Specifications
Maximum Memory:
  • 32GB
Expansion:
  • 2 Sockets
Standard Memory:
  • 8GB (Removable)
  • 16GB (Removable)
CPU/Chipset:
  • Intel Core i7 Intel H370
  • Intel Core i5 Intel H370
  • Intel Core i3 Intel H370
  • Intel Pentium Intel H370
  • Intel Celeron Intel H370
Bus Architecture:
  • Flash - SDXC; SSD - M.2 NVMe; SSD - SATA 3.5-inch; USB 2.0/3.x Type-A
Mfr's System P/N's:
  • 4LY76AA; 4LY78AA; 4LY79AA; 4LY80AA; 4LY84AA; 4LZ15AA; 4LZ77AA; 4YS44AA
Upgrade Path:
  • Configurations up to 32GB can be reached using any combination of 4, 8, and 16GB modules.