32 CHAPTER 3: FEATURES AND SPECIFICATIONSDIP Switches DIP switches are located on the left side of the bridge/router (when facingthe front panel) and are for 3Com use only.CAUTION: To avoid accidentally erasing your flash memory orreinitializing the EEPROM, make sure all switches are in the downposition.Hardware InterruptSwitchThe hardware interrupt switch is located on the left side of thebridge/router (when facing the front panel). It is recessed into an openingnear the DIP switches. Press the switch with a nonconductive object, suchas a plastic stylus, to activate the monitor firmware utility.WARNING: Use only a nonconductive object, such as a plastic stylus, topress the hardware interrupt switch. Do not use the tip of a pencil.Graphite particles from the pencil may cause you to receive an electricshock and may damage components on the motherboard.Reset Button Pressing the Reset button resets the bridge/router. The reset button onthe model 4xx bridge/router is on the front panel as shown in Figure 4.The reset button on the model 5xx bridge/router is on the left side of thebridge/router (when facing the front panel) as shown in Figure 5.Left side of unitDIP switchesLeft side of unitHardware interrupt switchHWBook Page 32 Friday, June 19, 1998 3:42 PM