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Catalog/SK hynix/DDR4 UDIMM/HMAA4GU7AJR8N-VK
SK hynix · Server memory

HMAA4GU7AJR8N-VK

Verified

32 GB DDR4-2666 ECC Unbuffered DIMM (UDIMM), dual-rank ×8.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR44 sources
Module typeUDIMM · ECC Unbuffered DIMM5 sources
Capacity32 GB4 sources
SpeedDDR4-2666 · PC4-213284 sources
Organization / rank2Rx85 sources
CAS latency194 sources
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 UDIMM
Fits these servers memory support by platform
Confirmed = listed in the vendor's memory documentation for that server. Vendor match = the vendor's own part cross-reference matches this module and its speed is validated for the platform; the module is not taken from that server's memory list. Spec match = this module meets the platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. Confirm against your server's qualified parts list before ordering.
Compatible alternatives any brand · same JEDEC specification
ManufacturerPart numberSpec
Kingston9965745-022.A00G32 GB · DDR4-2666 · UDIMM · 2Rx8
KingstonKSM26ED8/32HA32 GB · DDR4-2666 · UDIMM · 2Rx8
KingstonKSM26ED8/32ME32 GB · DDR4-2666 · UDIMM · 2Rx8
KingstonKSM26ED8/32MF32 GB · DDR4-2666 · UDIMM · 2Rx8
MicronMTA18ADF4G72AZ-2G6B2ZI32 GB · DDR4-2666 · UDIMM · 2Rx8
SamsungM391A4G43MB1-CTDQ32 GB · DDR4-2666 · UDIMM · 2Rx8
Modules match on all key specifications (type, form factor, capacity, speed, rank organization) and are generally interchangeable in servers that accept this spec. Interchangeability is based on matching JEDEC specifications, not per-server testing. Confirm against your server vendor's qualified parts list. View the full family →
Frequently asked
Can I use a Kingston or Micron module instead?
In most servers, yes: 9965745-022.A00G (Kingston), KSM26ED8/32HA (Kingston), KSM26ED8/32ME (Kingston) match this module on every key specification (32 GB, DDR4-2666, UDIMM, 2Rx8). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.