1-4
Switch Overview
Switch Hardware Features
LEDs
The front panel of the switch provides status LEDs for system monitoring. The
following table details the functions of the various indicators.
1
For supported transceivers, visit www.hp.com/networking/support.
– In the first textbox, type J4858 (for 100-Mb and Gigabit information).
– Select any of the products that display in the dropdown list. Click the Display selected
button.
– Select Product support information. Then click Manuals and find the Transceiver
Support Matrix.
For technical details of cabling and technologies see "Cabling and Technology Information"
in Appendix A.
LED State Meaning
Power
(green)
On The switch is receiving power.
Off The switch is NOT receiving power.
Fault
(orange)
On On briefly after the switch is powered on or reset, at the beginning of switch self
test. If the LED remains on, it indicates a detected hardware failure during the self
test.
Blinking* A fault has occurred on the switch or one of the switch ports. The Link LED for the
port with the fault will blink simultaneously.
Off The normal state; indicates that there are no fault conditions on the switch.
Locator
(blue)
Blinking** The Locator LED is used to locate a specific switch in an area full of switches. The
LED blinks for 30 minutes when activated through the switch software.
Off The Locator LED is disabled by default.
PD
(green)
1810-8G Switch
only
On Power is available on the PoE In port (Port 1).
Blinking* Power is no longer available on the PoE In port. The switch is powered from the
external power adapter. The LED continues to blink until power is restored on the
PoE In port or the switch reset.
Off No power is available on the PoE In port.
Link/Act
(green)
On The port is enabled and receiving a link indication from the connected device.
Off One of these condition exists:
• no active network cable is connected to the port
• the port is not receiving link beat or sufficient light
• Green Mode has been enabled.
Blinking* Indicates that there is network activity on the port.
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