Replacement for 21P5091: Drop-In Alternatives We Stock
Looking for a replacement for the 21P5091 (21P5091 - IBM 940X CPU System Board)? Pro Disk Network ships IBM 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 21P5091
| SKU | 21P5091 |
|---|---|
| Product | 21P5091 - IBM 940X CPU System Board |
| Current price | $418.95 |
| Stock status | In Stock |
| Detail page | View 21P5091 › |
Drop-in replacements for 21P5091
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.
7870C4U - IBM BladeCenter HS22 1x Intel Xeon 2.93GHz Quad Core CPU 4GB RAM Server System Blade Server System
SKU: 7870C4U
Price: $186.79
7328-54U - IBM System x3200 M3 Intel Xeon X3450 2.66GHz CPU Tower Server System
SKU: 7328-54U
Price: $271.58
79473AU - IBM System x3650 M2 Intel Xeon E5506 2.13GHz CPU 128GB RAM Server System
SKU: 79473AU
Price: $495.00
7148-AC1 - IBM System X3690 X5 7148 Intel 7500 Chipset Xeon X7550 8-Core 2GHz CPU Server System
SKU: 7148-AC1
Price: $703.16
7944E5U - IBM System x3550 M3 Intel Xeon E5649 2.53GHz CPU 16MB DDR2 SDRAM 1U Rack-Mountable Server System
SKU: 7944E5U
Price: $937.04
8737L2J - IBM Flex System x240 Intel Xeon E5 8-Core 2.20GHz CPU 8GB RAM Rack Server System
SKU: 8737L2J
Price: $959.75
7916M2U - IBM / Lenovo Flex System x222 2 X Intel Xeon E5 8-Core 2.10GHz CPU 16GB RAM Blade Server System
SKU: 7916M2U
Price: $1,175.07
7914EBU - IBM System x3550 M4 Intel Xeon E5-2620 2.0GHz CPU 8GB RAM 1U Rack Server System
SKU: 7914EBU
Price: $1,586.43
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.