DRAM LED with RG09R432GX2-4000C19B on PRIME B760-PLUS D4: QVL Checklist

ASUS lists RG09R432GX2-4000C19B on the PRIME B760-PLUS D4 memory QVL at 4000 MT/s for a 2x 32GB entry. A DRAM LED or failed training does not prove the kit is defective; verify the CPU generation, installed BIOS, module placement and profile first.

Return to a documented baseline

Shut down and disconnect power before moving modules. Use the board manual's recommended DIMM positions for 2x 32GB. If an EXPO/XMP profile was enabled, return to the manufacturer's default settings. Initial training may take time; use the board manual's guidance before interrupting a first boot.

Read this exact QVL row

ASUS records vendor Thermaltake, part number RG09R432GX2-4000C19B, profile XMP, rated speed 4000 MT/s, QVL run speed 4000 MT/s, timing 19-23-23-42, voltage 1.35 and DIMM support 1,2. Compare every character in the kit SKU; a similar marketing name is not the same tested part.

Check CPU and BIOS scope

The extracted QVL row did not capture which CPU-generation filter was active. Reopen the current ASUS QVL, choose the installed processor generation, and confirm that the exact row remains present. Record the BIOS installed on your board. The kit maker's current JEDEC default and production revision also need its own data sheet.

Isolate the remaining cause safely

If the system still fails at documented defaults, follow the board manual's one-module diagnostic sequence and record which slot and module were used. Do not mix two separate kits or assume a two-DIMM QVL entry guarantees four-DIMM training. Send the board maker or kit maker the board revision, CPU, BIOS and complete SKU when requesting support.

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