Perle 10/100/1000 Ethernet Extended Temperature Media Converter
Installation Guide
4
DIP Switches
The DIP switches are accessible through the opening in the side
of the enclosure.
Note: All switch changes take effect immediately.
DIP Switch Settings

Auto Negotiation copper (Switch 1)

Switch Position Copper
Up (default) Auto
Down Off
Note: Auto negotiation should only be turned off, if the copper link
partner does not support Auto Negotiation and fixed settings are
required by the copper link partner.