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Product Overview
Cable Side
Figure 2 USB Mini-Type B Port
The configurable inactivity timeout reactivates the RJ-45 console port if the USB console port is activated, but no input activity occurs on
it for a specified time period. When the USB console port deactivates due to a timeout, you can restore its operation by disconnecting and
reconnecting the USB cable. For information on using the CLI to configure the USB console interface, see the switch software guide.
Power-Input Terminal
The power-input terminal provides screw terminals for the AC and DC power connections. The switch can operate with one or two power
supplies. If one of the power sources fail, the other continues to power the switch. See Power Supply Installation, page 33 for information.
Figure 3 Power-Input Terminal
Alarm Ports
The switch has four alarm inputs and one alarm output.
Alarm Input
The alarm input is a dry-contact alarm port. You can connect up to four alarm inputs from devices, such as a door, a temperature gauge, or
a fire alarm, to the alarm port. You can use the CLI to set the alarm severity to minor, or major. An alarm generates a system message and
turns on an LED. See the Alarm LEDs, page 9 for the LED descriptions.
Alarm Output
The alarm output can be configured as a major alarm. Output alarms often control an external alarm, such as a bell or a light. To connect an
external alarm device to the relay, you connect two relay contact wires to complete the electrical circuit. See for information on the alarm
pinouts. see the Alarm Port, page 54.
Four 1000 SFP/10G SFP+ Ports (Uplinks)
Depending on the switch model, the uplink ports support either GE optics and 10G optics, or only GE optics. When using a 1000BaseT SFP,
the port only operates at 1000 mbps.
For more information about SFP/SFP+ modules and cables, see Transceiver Modules. See Switch Models, page 1 for model information.
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