Replacement for 21140-AF: Drop-In Alternatives We Stock
Looking for a replacement for the 21140-AF (21140-AF - DEC PCI Fast Ethernet Adapter)? 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 21140-AF
| SKU | 21140-AF |
|---|---|
| Product | 21140-AF - DEC PCI Fast Ethernet Adapter |
| Current price | $344.33 |
| Stock status | In Stock |
| Detail page | View 21140-AF › |
Drop-in replacements for 21140-AF
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.
FA310TX - Netgear Fast Ethernet PCI Network Adapter PCI 1 x RJ-45 10/100Base-TX
SKU: FA310TX
Price: $296.30
54-25192-01 - Digital Equipment (DEC) DEC 4MB/32BIT PCIP2 Graphics MODULE
SKU: 54-25192-01
Price: $550.04
NC552SFP - HP 10GB 2-Port Ethernet Server Adapter Network Adapter PCI-Express 2.0 X8 10 Gigabit Ethernet 2 Ports
SKU: NC552SFP
Price: $61.05
614202-B21 - HP Nc552SFP 10GB 2-Port Ethernet Server Adapter Network Adapter PCI-Express 2.0 X8 10 Gigabit Ethernet 2 Ports
SKU: 614202-B21
Price: $280.87
J9536-61101 - HP Expansion Module - Ethernet, Fast Ethernet, Gigabit Ethernet - 10base-t, 100base-tx, 1000base-t - 20 Ports + 2 X Sfp+
SKU: J9536-61101
Price: $194.74
25R8958 - IBM NetXtreme 1000 T Ethernet FAST Ethernet Gigabit 10/100/1000 Base-T Network Adapter
SKU: 25R8958
Price: $79.36
ST2000PEXPSE - StarTech OneConnect Dual-Port PCI Express Gigabit Ethernet PCI Express Network Card Adapter - POE/PSE - Network Adapter
SKU: ST2000PEXPSE
Price: $263.16
22P4710 - IBM Intel Pro/1000T Ethernet FAST Ethernet 10/100/1000 PCI Desktop Network Interface Card
SKU: 22P4710
Price: $109.13
22P6501 - IBM Intel PRO/1000T Ethernet FAST Ethernet 10/100/1000 PCI Desktop Network INTERFACE Card
SKU: 22P6501
Price: $182.37
22P6509 - IBM Intel PRO/1000T Ethernet FAST Ethernet 10/100/1000 PCI Desktop Network INTERFACE Card
SKU: 22P6509
Price: $194.99
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.