Replacement for 261856-051: Drop-In Alternatives We Stock
Looking for a replacement for the 261856-051 (261856-051 - Compaq 2GB DDR-266MHz PC2100 ECC Registered 184-Pin DIMM Dual Rank Memory Module)? Pro Disk Network ships 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 261856-051
| SKU | 261856-051 |
|---|---|
| Product | 261856-051 - Compaq 2GB DDR-266MHz PC2100 ECC Registered 184-Pin DIMM Dual Rank Memory Module |
| Current price | $100.61 |
| Stock status | In Stock |
| Detail page | View 261856-051 › |
Drop-in replacements for 261856-051
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.
261586-051 - HP 2GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 261586-051
Price: $96.84
261568-051 - HP 2GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 261568-051
Price: $117.38
261586R-051 - HP 2GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 261586R-051
Price: $117.38
300702-051 - HP 2GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 300702-051
Price: $117.38
261585-051 - HP 1GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 261585-051
Price: $99.03
261585R-051 - HP 1GB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 261585R-051
Price: $99.03
261584-051 - HP 512MB DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM Memory Module
SKU: 261584-051
Price: $154.89
273028-051 - Compaq 512MB DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory Module
SKU: 273028-051
Price: $93.43
361011-371 - Compaq 2GB DDR-266MHz PC-2100 ECC Registered CL2.5 184-Pin DIMM Memory Module
SKU: 361011-371
Price: $100.61
338441-B21 - Compaq 2GB DDR-266MHz PC-2100 ECC Registered CL2.5 184-Pin DIMM Memory Module
SKU: 338441-B21
Price: $100.61
305208-001 - Compaq 4GB (2 X 2GB) DDR-266MHz PC-2100 ECC Registered CL2.5 184-Pin DIMM Memory
SKU: 305208-001
Price: $191.16
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.