3Com DUA1860-0AAA01, LINKBUILDER MSH 4 PORT ETHERNET BRIDGE MODULE manual A

ALINK SETTINGS
The LinkBuilder MSH 4 Port Ethernet Bridge M odule has a link,
LK1, for resetting its configuration to default values, see Figure
A-1.
Figure A-1 The Location Of The Link
WARNING: This method of resetting the module has the same
effect as initializing NVRAM via the VT100 management
interface. All changes ever made to the bridge will be reset to
default settings.