Replacement for CISCO1721-ADSL: Drop-In Alternatives We Stock
Looking for a replacement for the CISCO1721-ADSL (CISCO1721-ADSL - Cisco 1700 Single-Port 10/100 BaseT Wired 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 CISCO1721-ADSL
| SKU | CISCO1721-ADSL |
|---|---|
| Product | CISCO1721-ADSL - Cisco 1700 Single-Port 10/100 BaseT Wired Router |
| Stock status | In Stock |
| Detail page | View CISCO1721-ADSL › |
Drop-in replacements for CISCO1721-ADSL
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.
CISCO678-2 - Cisco 678 10/100Mbps Ethernet ADSL Router with Power Adapter
SKU: CISCO678-2
Price: $261.89
WS-C2960XR-24TS-I - Cisco Catalyst 24 -Port 10/100/1000 Ethernet 4 x SFP uplink Port IP Stackable Switch
SKU: WS-C2960XR-24TS-I
Price: $393.42
NM-1FE1R2W - Cisco Single Port 10/100 Token Ring 2 WIC Slots Network Module
SKU: NM-1FE1R2W
Price: $324.71
WS-C2950G-24-EI - Cisco Catalyst 2950G 24-Port 24 x 10/100Base-TX + 2 x uplink Port Layer 2 Managed Fast Ethernet Network Switch
SKU: WS-C2950G-24-EI
Price: $213.68
73-1688-04 - Cisco Catalyst 1-Port Fast Ethernet 100BASETX Port Adapter
SKU: 73-1688-04
Price: $235.79
Cisco A9K-MPA-2X10GE 2-port 10-Gigabit Ethernet Modular Port Adapter - expansion module - 2 ports
SKU: A9K-MPA-2X10GE
Price: $283.55
SPA-1X10GE-L-V2 - Cisco 1-Port 10 Gigabit Ethernet Shared Port Adapter
SKU: SPA-1X10GE-L-V2
Price: $1,609.26
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.