Acer AB460 F1 - Manual (Page 352)

4 Networking Switch Modules 332
Figure 4-212. Stacking Swtiches
Note: In a stack only one switch can be configured as master.
Otherwise the slave switches will not allow you to configure
anything except
stacking disabled . To login to slave switches, use a
login name as " stackuser " and password as " stack123 ".
Removing a stacked switch
To remove a switch from stacking follow the below recommended
procedure.
1. Disconnect stacking cables.
2. Reboot the removed switch as a standalone switch.
3. Disable stacking.
4. Reboot the switch again to operate as regular stand-alone switch.
Note: When a switch is moved from stacking to stand-alone mode,
the saved stacking configurations can not be loaded in stand-
alone mode. When stacking is disabled, the switch software
renames the existing configuration file to avoid automatic
restoration of stacking configurations on a stand-alone switch.