MSI MAG B760M Mortar JFP1 Pinout | Generated by AI
Question: What are the pin definitions for the JFP1 (front panel) header on the MSI MAG B760M Mortar motherboard?
Answer:
JFP1 on the MAG B760M Mortar (all three SKUs: Mortar, Mortar WIFI, Mortar MAX WIFI) is the standard front-panel switch/LED header — it controls power on, power reset, and the LEDs on your PC case/chassis, with Power Switch/Reset Switch headers for the power/reset buttons, a Power LED header, and an HDD LED header that indicates hard disk activity. It’s a 2×5 pin block with pin 9 physically absent as a keying/orientation guide, giving you 9 usable pins.
This is MSI’s implementation of the Intel Front Panel I/O Connectivity Design Guide header, and the pin definition table is identical across essentially all modern MSI boards (B650, B760, Z790, etc.) — I pulled the canonical table below, sourced from MSI’s own manuals for boards using this same connector:
JFP1 Pin Definition (2x5 header, pin 9 = no pin / key)
1 3 5 7 9(key)
2 4 6 8 10
Pin | Signal | Description
----+---------------+---------------------------------------------
1 | HD_LED+ | Hard disk LED, pull-up
2 | FP PWR/SLP+ | Power LED pull-up
3 | HD_LED- | Hard disk activity LED cathode
4 | FP PWR/SLP- | Power LED pull-up (2nd LED lead)
5 | RST_SW- | Reset switch, low reference, pull-down to GND
6 | PWR_SW+ | Power switch, high reference, pull-up
7 | RST_SW+ | Reset switch, high reference, pull-up
8 | PWR_SW- | Power switch, low reference, pull-down to GND
9 | (no pin) | Key — orientation guide
10 | RSVD_DNU | Reserved, do not connect
Practical wiring for your case cables:
- Power Switch (2-pin, no polarity) → pins 6 + 8
- Reset Switch (2-pin, no polarity) → pins 5 + 7
- Power LED (2-pin, has polarity) → pins 2 + 4 (or 4-pin if your case uses dual-color PWR/SLP, straddling those same signal pairs)
- HDD LED (2-pin, has polarity) → pins 1 + 3
Notes for your build:
- Power and reset switches are momentary contacts — polarity doesn’t matter, they’ll work either way.
- LEDs are polarity-sensitive: reversed wiring just means the LED won’t light, no hardware damage.
- On the physical board layout, JFP1 sits near JTPM1, SATA7/8, and JUSB1/JUSB2, in the lower-right area of the board (this matches typical MSI mATX layouts, JFP1 bottom-right corner near the SATA ports).
- JFP2 (separate 8-pin header) is only for Buzzer/Speaker — not required for boot, useful for old-school POST beep codes.
References:
- MSI MAG B760M MORTAR MAX WIFI / WIFI / MORTAR Motherboard Manual
- MSI PRO B760M-A WIFI DDR4 — JFP1 description
- MSI JFP1 pin definition table (MS-7346 manual, canonical across MSI line)
- MSI HOW-TO install front panel connectors (JFP1) — video