Replacement for 270842-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 270842-B21 (270842-B21 - Compaq 64MB 66MHz PC66 ECC Unbuffered CL2 168-Pin DIMM 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 270842-B21
| SKU | 270842-B21 |
|---|---|
| Product | 270842-B21 - Compaq 64MB 66MHz PC66 ECC Unbuffered CL2 168-Pin DIMM Memory Module |
| Current price | $113.68 |
| Stock status | In Stock |
| Detail page | View 270842-B21 › |
Drop-in replacements for 270842-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.
278095-001 - Compaq 64MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 278095-001
Price: $77.63
242805-B21 - Compaq 64MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module for DeskPro 2000MMX / 4000MMX
SKU: 242805-B21
Price: $77.63
320669-001 - Compaq 64MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module for Presario 5000 / 5100 Desktop PC
SKU: 320669-001
Price: $77.63
278098-001 - Compaq 64MB 66MHz PC66 ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 278098-001
Price: $96.20
270859-002 - Compaq 64MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module for DeskPro 2000MMX / 4000MMX
SKU: 270859-002
Price: $128.95
270857-002 - Compaq 64MB 66MHz PC66 ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 270857-002
Price: $273.91
270856-002 - Compaq 128MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module for DeskPro 4000 / 6000 PCs
SKU: 270856-002
Price: $77.63
271108-002 - Compaq 16MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 271108-002
Price: $77.63
242802-B21 - Compaq 8MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 242802-B21
Price: $83.88
288440-001 - Compaq 32MB 66MHz PC66 ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 288440-001
Price: $113.68
268308-002 - Compaq 32MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 268308-002
Price: $113.68
278031-002 - Compaq 32MB 66MHz PC66 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 278031-002
Price: $113.68
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.