The Cisco® 900 Series Integrated Services Routers (ISRs) combine Internet access, comprehensive security, and wireless services in a single high-performance device that is easy to deploy and manage. They are well suited for deployment as Customer Premises Equipment (CPE) in enterprise small branch offices and in service provider managed-service environments. Product overview The Cisco 900 Series ISRs deliver integrated security and threat defense, protecting networks from both known and new Internet vulnerabilities and attacks. These powerful, fixed-configuration routers provide secure broadband and Metro Ethernet connectivity. Service providers offering managed Ethernet WAN services can deploy them in customer locations as CPE. Centralized and remote management capabilities are available through web-based tools and Cisco IOS® Software for full visibility and control of network configurations at the remote site. The 900 Series ISRs simplify the deployment of Ethernet WAN services, with end-to-end Operations, Administration, and Maintenance (OA&M), Service-Level Agreement (SLA) monitoring and verification, and configuration management. The Cisco 900 Series ISRs come with a 4-port managed switch, providing LAN ports to connect multiple devices. Figures 1 and 2 show the C921-4P and C926-4P models.

Ports & interfaces
Ethernet LAN (RJ-45) ports	4
USB ports quantity	1
USB version	2.0
Weight & dimensions
Width	228.6 mm
Depth	241.3 mm
Height	43.2 mm
Weight	1.2 kg
Power
AC input voltage	100 - 240 V
Power over Ethernet (PoE)	N
Operational conditions
Operating temperature (T-T)	0 - 50 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	5 - 95%
Protocols
Management protocols	Telnet, Simple Network Management Protocol Version 3 (SNMPv3), Secure Shell (SSH) Protocol, CommandLine Interface (CLI), and HTTP management
Network
Networking standards	IEEE 802.1D
Ethernet interface type	Gigabit Ethernet
VLAN support	Y
Security
Security algorithms	802.1x RADIUS
Access Control List (ACL)	Y
Management features
Web-based management	Y
Quality of Service (QoS) support	Y
Other features
Switch type	Managed
Design
Product colour	Black
Rack mounting	N
LED indicators	Y
Mobile network
Mobile network generation	4G
4G standard	LTE
Features
Flash memory	2048 MB
Internal memory	1024 MB
Electromagnetic compatibility	47CFR, AS/NZS CISPR22 2, CISPR22, EN55022, ICES003, EN61000-3-2, KCC, EN55024, KN24
Logistics data
Harmonized System (HS) code	85176990
WAN connection
Ethernet WAN	Y
3G/4G USB modem compatibility	Y