Replacement for C3845-35UC-K9: Drop-In Alternatives We Stock
Looking for a replacement for the C3845-35UC-K9 (Cisco C3845-35UC/K9 3845 Integrated Services Router 4 x Network Module, 4 x HWIC, 1 x SFP (mini-GBIC), 2 x AIM, 4 x PVDM, 1 x CompactFlash (CF) Card 2 x 10/100/1000Base-T LAN)? 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 C3845-35UC-K9
| SKU | C3845-35UC-K9 |
|---|---|
| Product | Cisco C3845-35UC/K9 3845 Integrated Services Router 4 x Network Module, 4 x HWIC, 1 x SFP (mini-GBIC), 2 x AIM, 4 x PVDM, 1 x CompactFlash (CF) Card 2 x 10/100/1000Base-T LAN |
| Stock status | In Stock |
| Detail page | View C3845-35UC-K9 › |
Drop-in replacements for C3845-35UC-K9
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.
Cisco PWR-3845-AC-IP Inline AC IP Power Supply For Cisco 3845 Routers Spare
SKU: PWR-3845-AC-IP
Price: $840.95
HWIC-2FE - Cisco Catalyst 2-Port Fast Ethernet High Speed WIC Card for Integrated Services Router
SKU: HWIC-2FE
Price: $594.75
HWIC-2FE-RF - Cisco 2-Port Fast Ethernet High Speed WIC Card for Integrated Services Router
SKU: HWIC-2FE-RF
Price: $700.50
HWIC-AP-AG-A - Cisco IEEE 802.11a/b/g HWIC Access Point Interface Card Wireless Module
SKU: HWIC-AP-AG-A
Price: $544.63
HWIC-3G-HSPA-A-RF - Cisco 3G HWIC Att HSPA/UMTS 850/1900/2100 Quad Band 2G
SKU: HWIC-3G-HSPA-A-RF
Price: $736.20
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
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.