United States$5,000,000+
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E
Ethan Roberts
5
Reliable dual Ethernet router with wireless support. Good performance for small business environments.
CISCO851W-G-A-K9
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Duel E Security Router 802.11g FCC compliance
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CISCO851W-G-A-K9
- Description:
- Duel E Security Router 802.11g FCC compliance
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- Brand:
- Cisco
- GTIN:
- 746320958071
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CISCO851W-G-A-K9 Overview
CISCO851W-G-A-K9 is a compact, fixed-architecture enterprise router engineered for branch connectivity with integrated routing, switching, and wireless capabilities. It delivers versatile power options by supporting both AC and DC supplies (with redundancy where applicable) and incorporates dedicated WAN and LAN interfaces via 10/100 Ethernet ports for reliable network access.
CISCO851W-G-A-K9 enhances network performance with integrated VPN support, robust firewall protection, and high availability features that ensure continuous operation. Designed to serve enterprise and small business use cases, it offers modular expansion potential through integrated services such as voice, video, and WAN optimization while maintaining strong throughput and secure remote connectivity.
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CISCO851W-G-A-K9 Specifications
- Memory
- 256 MB
- Flash Memory
- 128 MB
- Ethernet Technology
- 10/100
- Form Factor
- Desktop
- Weight
- N/A
- Height
- N/A
- Depth
- N/A
- Width
- N/A
- Product Type
- Enterprise Router
- Architecture
- Fixed
- Remote Management
- Telnet, SSH, SNMP
- Firewall Features
- Yes
- Management
- Managed
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- QoS Features
- Supported
- Stacking Capability
- No
- 5G Support
- No
- Interface Ports
- RJ-45
- Device Type
- Router
- WAN Configuration
- WAN
- Speed/Capacity
- 100 Mbps
- Integrated Services
- Voice, Video, WAN Optimization
- High Availability Support
- Supported
- Power
- 65 Watt
- LAN Ports
- 4 LAN Ports
- WAN Ports
- 1 WAN
- Routing Protocols
- OSPF / EIGRP / RIP / Static Routing
- Built-in Security Features
- Firewall, Intrusion Prevention, Malware Protection
- VPN Support
- IPSec
- Wireless Support
- Yes
- Use Case
- Enterprise / Small Business
- Connectivity Type
- Wired / Wireless
- Modular Slots Available
- N/A
- Throughput Capacity
- 100 Mbps
- Power Source
- AC Power Supply / DC Power Supply / Redundant
- Expansion Slots
- N/A
- Broadband
- DSL / Cable / N/A
- Wi-Fi Standard
- WiFi 4 (802.11g)
- Network Protocols
- TCP/IP, UDP, ICMP
- Compliance Standards
- IEEE 802.3, IEEE 802.11b/g
- Features
- VPN, Firewall, Integrated Wireless, VoIP
- Product Name
- CISCO851W-G-A-K9
CISCO851W-G-A-K9 Use Case
Secure Branch Office Connectivity for SMBs
In a multi-site small or medium business environment, the CISCO851W-G-A-K9-Duel E Security Router 802.11g FCC compliance ensures stable, interference-free wireless links between headquarters and satellite offices. By leveraging certified 802.11g performance and built-in VPN, IT teams deliver encrypted data tunnels, voice-over-IP, and remote management without FCC violation risks. Outcome: streamlined branch deployment, regulatory assurance, and ongoing network reliability under heavy load.
Reliable Retail IoT & POS Integration
A nationwide retail chain integrates barcode scanners, digital price tags, and POS terminals via the Cisco 851W-G-A-K9 router’s 802.11g radio, fully FCC compliant to prevent channel overlap and signal degradation in crowded store environments. Network administrators enforce WPA2-Enterprise authentication and rogue AP detection to protect transaction data. Outcome: higher checkout throughput, zero FCC compliance penalties, and fortified customer data security.
Compliant Healthcare Telemetry and Guest Wi-Fi
In an outpatient clinic, medical telemetry devices and patient monitoring tools operate on a dedicated SSID broadcast by the CISCO851W-G-A-K9 router, maintaining strict FCC compliance to avoid interference with life-critical equipment. Simultaneously, a segmented Guest Wi-Fi network delivers secure internet access to visitors. Outcome: uninterrupted medical device operation, adherence to FCC regulations, and enhanced patient satisfaction through safe, managed connectivity.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| CISCO851W-G-A-K9 |  CISCO892W-AGN-E-K9 |  CISCO887-K9 |  CISCO886-SEC-K9 |  CISCO861W-GN-A-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | DSL / Cable / N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention |
| Compliance Standards | IEEE 802.3, IEEE 802.11b/g | FCC / CE | FCC / CE | FCC / CE | FCC / CE |
| Connectivity Type | Wired / Wireless | Wired | Wired | Wired | Wired |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Device Type | Router | Gateway | Router | Router | Router |
| EMC | N/A | N/A | N/A | FCC / CE | N/A |
| Ethernet Technology | 10/100 | 10/100/1000 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | N/A | N/A | N/A | N/A | EHWIC |
| Features | VPN, Firewall, Integrated Wireless, VoIP | VPN / IPv6 Compatible / Firewall | VPN / NAT / QoS / Firewall | VPN / IPv6 Compatible / Firewall / Syslog | VPN / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 256 MB | 128 MB | 128 MB | 128 MB |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Height | N/A | N/A | N/A | N/A | N/A |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice / Video | Voice / Video / Security | Voice | Voice / Video |
| Interface Ports | RJ-45 | RJ-45 / SFP | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 512 MB | 256 MB | 256 MB | 512 MB |
| Modular Slots Available | N/A | N/A | N/A | N/A | N/A |
| Network Protocols | TCP/IP, UDP, ICMP | IPv4 / IPv6 / MPLS | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6 |
| Power | 65 Watt | 65 W | 65 Watts | 35 W | 20 W |
| Power Source | AC Power Supply / DC Power Supply / Redundant | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | CISCO851W-G-A-K9 | Cisco 892 Wireless Aggregation Gateway | CISCO887-K9 | CISCO886-SEC-K9 | Cisco 861W Integrated Services Router |
| Product Type | Enterprise Router | Gateway | Enterprise Router | Branch Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet, SSH, SNMP | CLI / SNMP | CLI / SSH / Telnet / SNMP | Telnet / SSH / SNMP | SSH, Telnet, SNMP, HTTP/HTTPS |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | UL / CE | N/A |
| Speed/Capacity | 100 Mbps | Gigabit | 100 Mbps | Gigabit | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | FCC / CE | N/A |
| Throughput Capacity | 100 Mbps | 1 Gbps | 20 Mbps | 0.3 Gbps | N/A |
| Use Case | Enterprise / Small Business | Enterprise | Enterprise Branch | Enterprise | Small Business |
| VPN Support | IPSec | IPSec | IPSec / SSL VPN / DMVPN / N/A | IPSec VPN / SSL VPN | IPSec / SSL VPN / N/A |
| WAN Configuration | WAN | Dual WAN | WAN | Dual WAN | WAN |
| WAN Ports | 1 WAN | 2 WAN | 1 WAN | 2 WAN | 1 WAN |
| Weight | N/A | N/A | N/A | N/A | N/A |
| Wi-Fi Standard | WiFi 4 (802.11g) | WiFi 5 | N/A | N/A | WiFi 2 |
| Width | N/A | N/A | N/A | N/A | N/A |
| Wireless Support | Yes | Yes | No | No | Yes |
Reviews & Ratings
I
Isabella Brown
4
Cisco 851W provides stable routing and consistent wireless coverage. Easy to manage.
B
Benjamin Scott
5
Solid SOHO router with dependable performance. Suitable for everyday office use.
O
Olivia Carter
4
Wireless and Ethernet performance meet our needs. Setup was straightforward.
L
Lucas Harris
5
Durable and reliable. Maintains stable connections with minimal downtime.
Questions & Answers
What is the Cisco 851W-G-A-K9 Dual E Security Router?
The Cisco 851W-G-A-K9 is an integrated security router featuring dual Ethernet WAN ports, a 4-port 10/100 switch, and 802.11g wireless connectivity designed for small-office networks.
Which wireless standard does the Cisco 851W-G-A-K9 support?
The router supports IEEE 802.11g, delivering up to 54 Mbps of secure wireless connectivity for 2.4 GHz networks.
Is the Cisco 851W-G-A-K9 FCC compliant?
Yes, the Cisco 851W-G-A-K9 meets FCC Part 15 Class B emissions limits and complies with all applicable FCC regulations for unlicensed devices.
What security features are built into the Cisco 851W-G-A-K9?
It includes stateful packet inspection, hardware-accelerated IPsec VPN, NAT, ACLs, and WPA2 wireless encryption for comprehensive network protection.
How many VPN tunnels can the 851W-G-A-K9 support simultaneously?
The router supports up to 25 concurrent IPsec VPN tunnels with AES or 3DES encryption for secure remote access.
Can the Cisco 851W-G-A-K9 handle IPv6 traffic?
Yes, it offers full IPv6 routing support alongside IPv4, including OSPFv3, static routes, and DHCPv6 relay.
What are the WAN connectivity options?
It provides two Ethernet WAN interfaces for load balancing or failover and one RJ-11 port for ISDN backup connectivity.
Does the router include QoS functionality?
Yes, it features Cisco IOS QoS tools such as classification, policing, shaping, and low-latency queuing to prioritize voice and video traffic.
How is the Cisco 851W-G-A-K9 managed?
You can manage it via the Cisco IOS CLI, web-based GUI (Cisco Configuration Express), or SNMP for automated network monitoring.
What is the throughput capacity of this router?
It delivers up to 10 Mbps of packet forwarding performance, making it ideal for small-business Internet connections.
What power requirements does the Cisco 851W-G-A-K9 have?
It operates on 12 VDC at 2 A using the included power adapter, with a maximum power consumption of 15 W.
Which certifications does the 851W-G-A-K9 hold?
The router is certified to CSA, UL, CE, VCCI, C-Tick and complies with FCC and ICES-003 standards.
What are the physical dimensions and operating environment?
It measures 222 × 175 × 35 mm, weighs 0.7 kg, and operates between 0 °C and 40 °C with 10–90% non-condensing humidity.
Is the Cisco 851W-G-A-K9 suitable for small offices?
Yes, its compact form factor, integrated security, dual WAN support, and wireless access make it ideal for small to medium-sized offices.
How do I update the firmware on the Cisco 851W-G-A-K9?
Use the Cisco IOS web GUI or TFTP/FTP via CLI to upload the latest firmware image, then reload the device to apply the update.
What warranty and support options are available?
Cisco provides a one-year limited hardware warranty and offers optional SMARTnet® support for software updates and 24/7 technical assistance.