16GB DDR4-3200 NON-ECC UDIMM Compatible with ASRock Z790M PG Lightning/D4 | PC4-25600 2Rx8 1.2V CL22 288-PIN Unbuffered Non-ECC Desktop Memory. Fits ASRock Z790M PG Lightning/D4.

EXACT-MATCH UPGRADE — 16GB DDR4-3200 (PC4-25600), 2Rx8 Unbuffered non-ECC, 1.2V, CL22, 288-pin. The precise rank, voltage, and timing your system's memory controller expects, so it is recognized at full capacity and runs at its rated speed.

VERIFIED FITMENT — Compatible with the ASRock Z790M PG Lightning/D4 Motherboard. The 288-pin Unbuffered (UDIMM) form factor this motherboard requires — not an ECC/Registered server module or SODIMM. Spec-matched to the motherboard's memory-population rules.

PLUG-AND-PLAY PERFORMANCE — JEDEC-standard unbuffered non-ECC module with the SPD profile your system expects: install and boot at rated speed with no BIOS changes. Low-voltage 1.2V DDR4 for cooler, more efficient operation.

CHECK YOUR CONFIG — System memory support varies by model and processor. Consult your system manual for supported capacities, approved DIMM population order, and installation steps before purchase.

LIFETIME SUPPORT — Backed by a lifetime replacement warranty and free US-based technical support. Researched, matched, and compatibility-tested by NEMIX RAM, a US-based server memory specialist since 1993, and backed by a lifetime warranty.