Replacement for 408853-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 408853-B21 (408853-B21 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Dual Rank Memory)? 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 408853-B21
| SKU | 408853-B21 |
|---|---|
| Product | 408853-B21 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Dual Rank Memory |
| Current price | $71.58 |
| Stock status | In Stock |
| Detail page | View 408853-B21 › |
Drop-in replacements for 408853-B21
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.
408853-B21N - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B21N
Price: $243.53
408853-S21 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-S21
Price: $243.53
408853-B38 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B38
Price: $243.53
408853-B37 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B37
Price: $243.53
408853-B36 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B36
Price: $243.53
408853-B35 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B35
Price: $243.53
408853-B34 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B34
Price: $243.53
408853-B33 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B33
Price: $243.53
408853-B32 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B32
Price: $243.53
408853-B31 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B31
Price: $243.53
408853-B22 - HP 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 408853-B22
Price: $243.53
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.