JAUD1 Front Panel Audio Header

JAUD1 Front Panel Audio Header | Generated by AI

Home 2026.07

Question: What does JAUD1 mean on the MSI MAG B760M Mortar WiFi motherboard?

Answer:

JAUD1 is the standard label MSI (and most motherboard vendors) use for the front panel audio header — a 9-pin (2x5, one pin removed as a key) header on the PCB.

Breakdown of the naming convention:

J = Jumper/connector (generic prefix for any pin header on the board)
AUD = Audio
1 = instance number (first one; boards rarely have a second)

Physical purpose: it’s where you plug in the cable coming from your case’s front-panel audio jacks (headphone-out + mic-in on the top/front of your case). The cable is almost always labeled HD AUDIO (or AC'97 on very old cases — don’t use that mode on a modern board).

Pinout (standard Intel HD Audio front panel spec, which MSI follows):

Pin 1: MIC2_L
Pin 2: GND (Ground)
Pin 3: MIC2_R
Pin 4: -ACJ_DETECT (presence detect, no-connect on many boards)
Pin 5: LINE2_R
Pin 6: GND (sense)
Pin 7: FP_IO_R (reserved/key — this is the missing pin slot)
Pin 8: KEY (no pin, physically blocked)
Pin 9: LINE2_L
Pin 10: GND (sense)

Practical steps for your build:

Find JAUD1 on the bottom-left edge of the board (MSI almost always puts it there, silkscreened).
Locate your case’s front panel audio cable — should say HD Audio on the connector.
Plug it in — the connector is keyed (missing pin 8) so it only goes in one orientation.
In BIOS, there’s usually a setting under Advanced → Onboard Devices to toggle HD Audio vs legacy AC97 mode — leave it on HD Audio (default) for a modern case cable.

If your case cable is old and says AC'97, don’t force it — it won’t work correctly with the default HD Audio setting, and modern boards often don’t even support the legacy mode anymore.

No other header on that board (JFP1, JFP2 for power/reset/LEDs, JUSB1-4 for USB headers, JCI1 for chassis intrusion) shares this naming pattern by coincidence — it’s just MSI’s consistent J + function + number scheme across their whole lineup, so once you know this you can decode any other header on the silkscreen without pulling up the manual.

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