Acer Altos R920 Series - Manual (Page 34)

1 System tour 16
Button control panel
Item Icon Component
A HDD (hard disk drive) activity indicator
B LAN1 status indicator displays network activity in either
LAN ports on the mainboard.
LAN2 status indicator displays network activity in either
LAN ports on the optional I/O expansion module.
C Status/fault indicator
D Power indicator
E System ID indicator
F System ID button
G Power button
H Reset button