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Question (Q&A-07|37): What's the function of JL1 and JR1 jumpers on my ASRock motherboard?(5/9/2003)
Answer:When you connect speakers in back panel and front panel at the same time,
1. If the jumpers JL1 and JR1 are short, both front panel and rear panel audio connectors can work.
2. If both jumper caps on JL1 and JR1 are removed, only front panel audio works.
However, it requires your front panel to support the function.