Fix Your AIO Pump Connection | Generated by AI
AIO_PUMP = All-In-One Pump header on your motherboard.
It’s a dedicated 4-pin fan header labeled specifically for AIO (All-In-One) liquid cooler pumps.
On your MSI MAG B760M Mortar board
The motherboard has these relevant headers:
| Header | Label on board | Purpose |
|---|---|---|
| AIO_PUMP | top edge, near CPU socket | For the pump of your liquid cooler |
| CPU_FAN | right of CPU socket | For the radiator fans (or air cooler fan) |
| PUMP_FAN | sometimes same as AIO_PUMP | Alternate pump header |
| SYS_FAN1-4 | around the board | For case fans |
Your current setup (likely wrong)
AIO pump cable ──→ CPU_FAN ← pump controlled by CPU temp curve (bad)
Radiator fans ──→ ???
This causes:
- Pump speed fluctuates with CPU temp spikes
- Water flow changes → temperature oscillation
- Fans ramp up and down → annoying noise
Should be
AIO pump cable ──→ AIO_PUMP ← pump runs at 100% fixed (good)
Radiator fans ──→ CPU_FAN ← fans controlled by CPU temp curve
How to tell which cable is which on your Thermalright Frozen Prism 240
The AIO has two cables coming from the pump block:
- Pump power cable (3-pin or 4-pin, thicker wire) — labeled “PUMP” or comes from the pump housing
- Fan cables — come from the two radiator fans, often daisy-chained together into one connector
Check your cable routing and make sure:
- The pump cable goes to AIO_PUMP header on the motherboard
- The radiator fan cables go to CPU_FAN header (or via a splitter to CPU_FAN)
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