Alternative to C2851SEC-K9-U-SRST: Better-Value Equivalents in Stock
Comparing the C2851SEC-K9-U-SRST (Cisco C2851SEC/K9-U-SRST 2851 Integrated Service Router 4 x HWIC, 1 x Network Module, 1 x EVM, 3 x PVDM, 2 x AIM 2 x 10/100/1000Base-T) against alternatives? Pro Disk Network stocks 12 similar Cisco parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the C2851SEC-K9-U-SRST
| SKU | C2851SEC-K9-U-SRST |
|---|---|
| Product | Cisco C2851SEC/K9-U-SRST 2851 Integrated Service Router 4 x HWIC, 1 x Network Module, 1 x EVM, 3 x PVDM, 2 x AIM 2 x 10/100/1000Base-T |
| Stock status | In Stock |
| Detail page | View C2851SEC-K9-U-SRST › |
Alternatives to C2851SEC-K9-U-SRST
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 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
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
Cisco ISR4321/K9 ISR 4321 2-Port 4-Slot Gigabit Ethernet Integrated Service Router
SKU: ISR4321-K9
Price: $171.33
ACS-4220-RM-19 - Cisco 19-inch Rack Mounting Kit for Integrated Service 4221 Router
SKU: ACS-4220-RM-19
Price: $241.16
Cisco ISR4321-SEC/K9 ISR 2-Port 4-Slot 10/100/1000Base-T Gigabit Ethernet Integrated Service Router
SKU: ISR4321-SEC-K9
Price: $404.22
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.