Cisco PWR-3900-POE network equipment spare part Power supply unit (PSU)

Cisco® 3900, 2900, and 1900 Series Integrated Services Routers (ISR) build on 25 years of innovation and product leadership. Cisco Integrated Services Routers Generation 2 (ISR G2) are architected to enable the next wave of branch-office evolution, enabling richer media experiences with video, and local compute resources for local application flexibility and survivability. Adding to the rich breadth of services available on the original ISRs - security, unified communications, wireless, and application optimization services - the ISR G2 routers enhance the reduction in overall branch-office expenses with the introduction of flexible services “on demand” through software licensing and simplified Cisco IOS® Software packaging.