Usb Led; Figure 7: Usb Slot Led On The At-X220-28Gs Switch; Table 4. Usb Led Functional Descriptions - Allied Telesis AT-x220-28GS Installation Manual

USB LED

The AT-x220-28GS switch has a single bi-color USB LED on the
Management Panel (see Figure 7)
Figure 7. USB slot LED on the AT-x220-28GS Switch
USB LED
The USB LED indicates whether the USB slot has a USB inserted, or is
reading or writing to the USB device. Table 4 describes the functions of
the USB LED.

Table 4. USB LED functional descriptions

LED
USB
Note
All of the port LEDs are off when the switch is operating in
ecofriendly mode. See "Ecofriendly button" on page 14 for more
information.
27
28
USB Slot
State
Off
Flashing
green
Steady
green
Flashing
amber
AT-x220-28GS Switch Installation Guide
FAULT
POWER
USB
ON ACT
CONSOLE
ERR
CLASS 1
LASER PRODUCT
Description
No USB device detected
Writing or reading
USB device inserted and recognized for use
Writing or reading error
13