Replacement for 266270-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 266270-B21 (266270-B21 - HP 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 184-Pin DIMM 2.5V 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 266270-B21
| SKU | 266270-B21 |
|---|---|
| Product | 266270-B21 - HP 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module |
| Current price | $259.91 |
| Stock status | In Stock |
| Detail page | View 266270-B21 › |
Drop-in replacements for 266270-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.
A6968AX - HP 512MB PC2100R DDR-266MHz Non-ECC Unbuffered CL2.5 184-Pin DIMM Memory Module
SKU: A6968AX
Price: $71.58
A6968A - HP 2GB Kit (4 X 512MB) DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory
SKU: A6968A
Price: $73.68
TS512MHP8028 - Transcend 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM Memory Module
SKU: TS512MHP8028
Price: $118.39
A6967-69001 - HP 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 184-Pin DIMM Memory Module
SKU: A6967-69001
Price: $147.09
278371-001 - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: 278371-001
Price: $163.92
HP AA633A#AK6 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM Memory Module
SKU: AA633A-AK6
Price: $163.92
A8028AR - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM Memory Module
SKU: A8028AR
Price: $163.92
A8028-60001 - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: A8028-60001
Price: $163.92
A8028-69001 - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: A8028-69001
Price: $163.92
A8028A - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: A8028A
Price: $163.92
DA206-69001 - HP 512MB DDR-266MHz PC2100 ECC Unbuffered CL2.5 184-Pin DIMM 2.5V Memory Module
SKU: DA206-69001
Price: $163.92
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.