Cisco CISCO7204, Regulatory Compliance And Safety Information Manual, Page: 5 / 38

5
Cisco 7200 Series Overview
The rear of the Cisco 7200 series routers provides access to the network processing engine and up
to two 280W, AC-input or DC-input power supplies (refer to Figure 4).
Figure 4 Cisco 7200 Series Router—Rear View
The network processing engine has no external connectors or LEDs. There are two handles for
removing and installing the network processing engine and two captive installation screws for
securing it to the chassis.
A fully configured Cisco 7200 series router operates with only one installed power supply; however,
a second, optional power supply provides hot-swappable, load-sharing, redundant power. The power
supply has the router’s main power switch and either an AC-input power receptacle, or a hardwired
DC-input power cable (depending on the type of installed power supply). Adjacent to the power
supply bays there is a 10 x 32-inch chassis ground receptacle that provides a chassis ground
connection for ESD equipment or a grounding wire (refer to Figure 4).
Note The Cisco 7200 routers come equipped with either one 280W AC-input or one 280W
DC-input power supply; a second 280W AC-input or DC-input power supply is available for the
router. Figure 4 shows the rear of a Cisco 7200 series router that is configured with a single 280W
AC-input power supply. (A power supply filler plate is installed over the second power supply bay.)
Three internal fans draw cooling air into the chassis interior and across internal components to
maintain an acceptable operating temperature (refer to Figure 4). The three fans are enclosed in a
tray that is located in the subchassis.
The I/O controller, port adapters, power supplies, and network processing engine slide into their
respective chassis slots and connect directly to the router’s midplane; there are no internal cables to
connect. The midplane distributes DC power from the power supplies to the I/O controller, port
adapters, fan tray, and network processing engine.
H6423
NETWORK PROCESSING ENGINE-150
Internal fans
Network processing
engine
AC-input
power supply
AC-input
receptacle
Power supply
filler plate
Chassis
grounding
receptacle
Power switch