Replacement for Q2D31A: Drop-In Alternatives We Stock
Looking for a replacement for the Q2D31A (Q2D31A - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module)? Pro Disk Network ships HP drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the Q2D31A
| SKU | Q2D31A |
|---|---|
| Product | Q2D31A - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module |
| Current price | $196.91 |
| Stock status | In Stock |
| Detail page | View Q2D31A › |
Drop-in replacements for Q2D31A
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
881067-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 881067-B21
Price: $184.21
872970-001 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 872970-001
Price: $194.74
P00601-001 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: P00601-001
Price: $196.91
P0005235-001 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: P0005235-001
Price: $196.91
1XD85AT - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 1XD85AT
Price: $196.91
847826-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 847826-B21
Price: $196.91
847825-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 847825-B21
Price: $196.91
838081-S21 - HP 16GB DDR4-2666MHz PC-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 838081-S21
Price: $231.26
881899-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 881899-B21
Price: $231.26
872837-091 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 872837-091
Price: $231.26
867855-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: 867855-B21
Price: $231.26
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.