C921J-4P is the Cisco 921J Gigabit Ethernet protection router with outside electricity deliver for Japan most effective. Cisco® 900J Series Integrated Services Routers (ISRs) integrate Internet access, complete protection, and wi-fi offerings in a unmarried high-overall performance tool that is straightforward to set up and manage. They are properly acceptable for deployment as Customer Premises Equipment (CPE) in enterprises, startup offices, and offerings provider. The router Cisco C921J-4P is supported most effective on Cisco IOS Software Release 15.8(3) Mb and later.