Juniper Networks J-series Services Router J2320 - Manual (Page 58)

Console Port
You can use the console port on the chassis front panel to connect to the Routing
Engine through an RJ-45 serial cable. From the chassis console port, you can use the
CLI to configure the router. The console port is configured as data terminal equipment
(DTE) and supports the RS-232 (EIA-232) standard.
For information about securing the chassis console port, see the J-series Services
Router Administration Guide.
For pinout information, see “Chassis Console Port Pinouts” on page 234.
AUX Port
The port labeled AUX on the front panel of the J4350 or J6350 Services Router is for
future use and is not activated.
USB Port
The USB ports on the front panel of the router (see Figure 19 on page 32) accept a
USB storage device or USB storage device adapter with a compact flash installed, as
defined in the CompactFlash Specification published by the CompactFlash Association.
When a USB storage device is installed and configured, it automatically acts as a
secondary boot device if the internal compact flash fails on startup. Depending on
the size of the USB storage device, you can also configure it to receive any core files
generated during a failure. For information about configuring a USB storage device,
see the J-series Services Router Administration Guide.
NOTE: For a list of supported USB storage devices, see the J-series Services Router
Release Notes at
http://www.juniper.net .
J4350 Power System
The J4350 Services Router uses either AC or DC power. The autosensing power supply
(see Figure 14 on page 28 or Figure 16 on page 29) distributes the different output
voltages to the router components according to their voltage requirements. The
power supply is fixed in the chassis and is not field-replaceable.
The AC power supply has a single AC appliance inlet that requires a dedicated AC
power feed. The DC power supply has a terminal block that provides a single DC
input (–48 VDC and return) and requires a dedicated 15 A (–48 VDC) circuit breaker.
The J4350 AC-powered chassis has a power switch and does not include a power
LED.
The J4350 DC-powered chassis includes a power supply LED located to the upper
right of the power supply connector. Table 16 on page 37 describes the power supply
LED.
36 ■ J4350 and J6350 Services Router Hardware Features
J2320, J2350, J4350, and J6350 Services Router Getting Started Guide