Replacement for CISCO2851-RF: Drop-In Alternatives We Stock
Looking for a replacement for the CISCO2851-RF (Cisco 2851 Integrated Services Router - 1 x NME-XD)? Pro Disk Network ships Cisco 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 CISCO2851-RF
| SKU | CISCO2851-RF |
|---|---|
| Product | Cisco 2851 Integrated Services Router - 1 x NME-XD |
| Stock status | In Stock |
| Detail page | View CISCO2851-RF › |
Drop-in replacements for CISCO2851-RF
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.
NME-WAE-502-K9 - Cisco Wide Area Application Services (WAAS) 1 x 10/100/1000Base-T Network Module for 2800 3800 Series Router
SKU: NME-WAE-502-K9
Price: $157.42
PWR-2921-51-POE - Cisco AC Power Supply with PoE Cisco 2921 / 2951 Integrated Services Router
SKU: PWR-2921-51-POE
Price: $683.88
PWR-3900-POE - Cisco Power Supply with PoE Switch For 3925 / 3945 Integrated Services Router
SKU: PWR-3900-POE
Price: $238.13
CISCO878-SEC-K9 - Cisco 878 G.SHDSL 4 x 10/100Base-TX LAN + 1 x WAN + 1 x ISDN BRI (S/T) WAN Integrated Services Router
SKU: CISCO878-SEC-K9
Price: $250.53
CISCO2811 - Cisco 2811 9-Port 9 x 10/100Base-TX Auxiliary Console 120/230V AC Ethernet Integrated Services Router
SKU: CISCO2811
Price: $273.11
Cisco C1861-SRST-F/K9 1861 8-Port 8 x 10/100/ PoE Fast Ethernet Integrated Services Router
SKU: C1861-SRST-F-K9
Price: $326.14
PWR-2811-AC - Cisco AC Power Supply For 2811 Integrated Services Router
SKU: PWR-2811-AC
Price: $417.54
DCJ5952-01P - Cisco 595-Watts AC Power Supply For 3925 / 3945 Integrated Services Router
SKU: DCJ5952-01P
Price: $461.84
Cisco PWR-1941-POE AC Power Supply with PoE For 1941 Integrated Services Router Spare
SKU: PWR-1941-POE
Price: $487.89
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.