MPC Computers, LLC
NetFRAME 1420
System Board Jumper JBT1
Speaker Jumper/Connector
To use the internal (onboard) speaker, place a jumper on pins 3-4 of J9. If you wish to use an
external speaker, connect the speaker header to all four pins of J9.
Speaker Jumper Pin Definitions
JLAN1 Enable/Disable
Change the setting of jumper JPL1 to enable or disable the JLAN1 Ethernet port on the
motherboard. The default setting is enabled.
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