Replacement for C3945-VSEC-K9: Drop-In Alternatives We Stock
Looking for a replacement for the C3945-VSEC-K9 (Cisco C3945-VSEC/K9 3945 230V 10/100/1000Base-T Gigabit Ethernet Voice Security Bundle Router)? 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 C3945-VSEC-K9
| SKU | C3945-VSEC-K9 |
|---|---|
| Product | Cisco C3945-VSEC/K9 3945 230V 10/100/1000Base-T Gigabit Ethernet Voice Security Bundle Router |
| Stock status | In Stock |
| Detail page | View C3945-VSEC-K9 › |
Drop-in replacements for C3945-VSEC-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.
RVS4000 - Cisco 230V 4-Port 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: RVS4000
Price: $189.47
Cisco CISCO1941W-A/K9 230V 10/100/1000Base-T Gigabit Ethernet Integrated Router
SKU: CISCO1941W-A-K9
Price: $259.50
C881-K9 - Cisco 230V 4-Port 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: C881-K9
Price: $1,489.01
Cisco CISCO2911-V/K9 230V 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: CISCO2911-V-K9
Price: $7,931.37
WS-C3560CG-8PC-S - Cisco Catalyst PoE RJ-45 8 x Ports 10/100/1000Base-TX + 2 x combo Gigabit SFP Gigabit SFP managed desktop Gigabit Ethernet Switch
SKU: WS-C3560CG-8PC-S
Price: $3,642.95
Cisco CISCO2901-16TS/K9 230V 10/100Base-T Gigabit Ethernet Terminal Server Bundle Router
SKU: CISCO2901-16TS-K9
Price: $2,228.21
ASA5545-K9 - Cisco 8-Port 120/230V 1000Base-T Gigabit Ethernet Firewall Edition Security Appliance Rack-Mountable
SKU: ASA5545-K9
Price: $7,766.18
ASA5525-K9 - Cisco 8-Port 120/230V 1000Base-T Gigabit Ethernet Firewall Edition Security Appliance Rack-Mountable
SKU: ASA5525-K9
Price: $15,924.63
Cisco PWR-3900-AC/2 400-Watts 100 / 240V Secondary AC Power Supply For 3925/3945 Integrated Services Router
SKU: PWR-3900-AC-2
Price: $856.43
WS-C2960X-24PSL-RF - Cisco Catalyst 2960-X Series PoE 24 x Ports 10/100/1000Base-T + 4 x Gigabit SFP Layer 2 Managed 1U Rack-Mountable Gigabit Ethernet Network Switch
SKU: WS-C2960X-24PSL-RF
Price: $130.26
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.