Replacement for M20: Drop-In Alternatives We Stock
Looking for a replacement for the M20 (M20 - Cisco Valet Wireless Router 4 x 10/100/1000Base-TX Network, 1 x Network WAN IEEE 802.11n (draft) 54Mbps)? 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 M20
| SKU | M20 |
|---|---|
| Product | M20 - Cisco Valet Wireless Router 4 x 10/100/1000Base-TX Network, 1 x Network WAN IEEE 802.11n (draft) 54Mbps |
| Stock status | In Stock |
| Detail page | View M20 › |
Drop-in replacements for M20
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.
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
C1111-4P - Cisco ISR 1100 4-Port Gigabit Ethernet WAN Integrated Service Router
SKU: C1111-4P
Price: $579.49
C1101-4P - Cisco ISR 1100 4-Port Gigabit Ethernet WAN Integrated Service Router
SKU: C1101-4P
Price: $1,237.89
C1111-8P - Cisco ISR 1100 8-Port Gigabit Ethernet WAN Integrated Service Router
SKU: C1111-8P
Price: $3,136.89
ISR1100-6G - Cisco ISR1100 Router 4 GE LAN/WAN Ports and 2 SFP ports 4GB RAM
SKU: ISR1100-6G
Price: $6,579.50
RV110W-A-NA-K9 - Cisco RV110W 100Mbps 5-Ports 10/100 Wireless N Router VPN Network Security/Firewall Appliance
SKU: RV110W-A-NA-K9
Price: $318.32
EHWIC-4ESG - Cisco 4 Port 10/100/1000 Enhanced High-Speed WAN Interface Card
SKU: EHWIC-4ESG
Price: $226.72
EHWIC-D-8ESG - Cisco 8 Port 10/100/1000 Enhanced High-Speed WAN Interface Card
SKU: EHWIC-D-8ESG
Price: $338.22
AIR-WLC4404-100-K9 - Cisco 4404 Wireless Lan Controller for up to 100 Access Points
SKU: AIR-WLC4404-100-K9
Price: $206.32
74-7105-01 - Cisco EHWIC-4ESG 4-Port Gigabit Ethernet Enhanced High-Speed WAN Interface Card
SKU: 74-7105-01
Price: $128.95
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.