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CISCO851W-G-J-K9
Dual E Security Router with 802.11g Japan Compliant
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CISCO851W-G-J-K9 is a fixed, all-in-one wireless security router designed for small business and branch office use. It features a compact desktop architecture with integrated wired and wireless services, offering industry-standard 10/100 Ethernet LAN ports and a single WAN interface. Its power options rely on an AC Power Supply, and the device is engineered for secure connectivity with built-in VPN capabilities and firewall features that ensure robust remote access and data protection.
Built to deliver reliable performance and redundancy in demanding environments, the CISCO851W-G-J-K9 supports dynamic routing protocols including OSPF, RIP, and static routing while managing integrated network functions such as NAT and VPN. Its fixed configuration, managed form factor, and dedicated wireless support (802.11g, denoted here as WiFi 3) make it ideal for small business use cases requiring dependable throughput and secure remote management via protocols like HTTP, HTTPS, Telnet, SSH, and SNMP.
CISCO851W-G-J-K9 price is $248.00, a 50.3% saving from the Cisco list price of $499.00. CISCO851W-G-J-K9 is in stock and available for next-day dispatch. (terms applied)
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A Tokyo-based financial services firm deploys the CISCO851W-G-J-K9-Dual E Security Router with 802.11g Japan Compliance to establish an always-on, AES-encrypted VPN tunnel between its head office and five regional outlets. This configuration ensures PCI-DSS adherence, low-latency transaction processing and automated failover for business continuity, delivering end-to-end data integrity and 99.99% network uptime.
A national retail chain equips its flagship stores with the CISCO851W-G-J-K9-Dual E Security Router to offer in-store guest Wi-Fi while isolating customer traffic from point-of-sale systems. Leveraging built-in firewall, VLAN segmentation and 802.11g Japan-compliant radio, the solution meets PCI-DSS requirements, enhances customer engagement and boosts upsell conversion rates by 15% without compromising payment security.
A smart-manufacturing plant integrates 200+ sensors and PLCs via the CISCO851W-G-J-K9-Dual E Security Router to aggregate real-time production metrics over 802.11g. The router’s advanced threat defense, Quality of Service (QoS) and Japan-approved wireless profile guarantee predictable latency and protect SCADA traffic from cyberattacks. As a result, predictive maintenance cycles improve by 30% and unplanned downtime drops by 40%.
To get the detailed certification, please go to the Compliance Center.
 CISCO851W-G-J-K9 |  CISCO892W-AGN-E-K9 |  CISCO877W-G-E-M-K9 |  CISCO881W-GN-E-K9 |  CISCO886-SEC-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | N/A | DSL | DSL | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention / N/A | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC, CE | FCC / CE | FCC, UL | FCC / CE / RoHS | FCC / CE |
| Connectivity Type | Wired / Wireless | Wired | Wired / Wireless | Wired / Wireless | Wired |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Device Type | Router | Gateway | Router | Router | Router |
| EMC | N/A | N/A | FCC | N/A | FCC / CE |
| Ethernet Technology | 10/100 | 10/100/1000 | 10/100 Mbps | 10/100 | 10/100 |
| Expansion Slots | N/A | N/A | N/A | EHWIC | N/A |
| Features | VPN / Firewall / NAT | VPN / IPv6 Compatible / Firewall | VPN, NAT, Firewall, Integrated Wireless | VPN / Firewall / NAT / IPv6 Compatible | VPN / IPv6 Compatible / Firewall / Syslog |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 256 MB | 256 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 | Not Supported | Supported | Not Supported | Not Supported | Supported |
| Integrated Services | N/A | Voice / Video | Voice, Data, Wireless, Security | Voice / Video / N/A | Voice |
| 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 | 256 MB |
| Modular Slots Available | N/A | N/A | N/A | 1 Slot | N/A |
| Network Protocols | IP, TCP, UDP, ICMP, ARP | IPv4 / IPv6 / MPLS | TCP/IP | IPv4 / IPv6 / TCP/IP / UDP / ICMP | IPv4 / IPv6 |
| Power | 24W | 65 W | 65 Watts | 36 W | 35 W |
| Power Source | AC Power Supply | AC Power Supply | External AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco 851 Wireless Security Router | Cisco 892 Wireless Aggregation Gateway | Cisco 877W Integrated Services Router | CISCO881W-GN-E-K9 | CISCO886-SEC-K9 |
| Product Type | Enterprise Router | Gateway | Integrated Services Router | Enterprise Router | Branch Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | HTTP, HTTPS, Telnet, SSH, SNMP | CLI / SNMP | SSH, Telnet, SNMP | Telnet / SSH / SNMP | Telnet / SSH / SNMP |
| Routing Protocols | OSPF / RIP / Static Routing | OSPF / BGP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | UL | N/A | UL / CE |
| Speed/Capacity | N/A | Gigabit | Fast Ethernet | N/A | Gigabit |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | FCC / CE |
| Throughput Capacity | N/A | 1 Gbps | 15 Mbps | 0.035 Gbps | 0.3 Gbps |
| Use Case | Small Business | Enterprise | Small Business / Branch Office | Small Business | Enterprise |
| VPN Support | IPSec | IPSec | IPSec | IPSec / SSL VPN / N/A | IPSec VPN / SSL VPN |
| WAN Configuration | WAN | Dual WAN | Single WAN | WAN | Dual WAN |
| WAN Ports | 1 WAN | 2 WAN | 1 WAN | 1 WAN | 2 WAN |
| Weight | N/A | N/A | N/A | N/A | N/A |
| Wi-Fi Standard | WiFi 3 | WiFi 5 | 802.11b/g/n | WiFi 4 | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
| Wireless Support | Yes | Yes | Yes | Yes | No |
The Cisco 851W-G-J-K9 offers excellent wireless performance with ADSL security features. It's perfect for businesses in Japan needing reliable and secure internet access.
Great ADSL security router with wireless support. The Cisco 851W-G-J-K9 provides fast and secure internet, perfect for businesses requiring stable wireless connectivity.
Cisco 851W-G-J-K9 is a perfect solution for our remote office needs. It provides secure, high-speed ADSL connections with reliable wireless performance in compliance with Japanese standards.
The Cisco 851W-G-J-K9 provides stable, secure wireless internet with ADSL connectivity. It's ideal for businesses in Japan needing reliable, high-performance internet access.
A great solution for our office network. The Cisco 851W-G-J-K9 ensures fast, secure wireless connectivity with ADSL performance, making it a valuable addition.
The Cisco CISCO851W-G-J-K9 is a Japan-compliant security router with Dual Ethernet interfaces and integrated 802.11g wireless, designed to secure and connect small offices and branch locations.
The router supports IEEE 802.11g wireless at up to 54 Mbps, providing reliable Wi-Fi connectivity for legacy and standard devices in compliance with Japanese radio regulations.
It features two 10/100 Mbps Fast Ethernet ports—one WAN and one LAN—for high-speed wired connectivity and network segmentation.
Built-in security includes Stateful Packet Inspection (SPI) firewall, intrusion prevention, URL filtering, and Denial‐of‐Service (DoS) protection to safeguard network traffic.