a 4pin PWM fan can still run through a 3pin DC header, there will just be no option to set a custom PWM curve.can I connect a 4-pin case fan into a 3-pin
Motherboard: P35-DS3 rev 2.1Maybe.
More information needed:
Full system hardware specs and OS information.
Motherboard, CPU, GPU, RAM?
PSU?
Disk drive(s)?
Fans?
Case?
The answer is likely in the documentation.
Especially for proprietary devices and connections.
Pin by pin.
I am using CPU_FAN, SYS_FAN1 and 2 are not being used. PWR_FAN is not being used too. Trying to match fans to headers by the cable of the fan to the port on the 4 pin SYS_FAN1 and leaving the PWM for SYS_FAN2This PSU?
Antec 350X PSU
Even if physically connectable (adapters or not) via a 4 pin or 3 pin connection without PWM that PSU may not be capable of supporting the system's power requirements.
Which will lead to another set of problems that may not end well.
The base concern being what/why there is a 4 or 3 pin mismatch?
This motherboard:
Motherboard link
What internal connectors and fan connectors/headers are being used (reference physically numbered Pages 22 & 24)?
How are you trying to match fans to headers?
Mismatch I don't clearly know yetThis PSU?
Antec 350X PSU
Even if physically connectable (adapters or not) via a 4 pin or 3 pin connection without PWM that PSU may not be capable of supporting the system's power requirements.
Which will lead to another set of problems that may not end well.
The base concern being what/why there is a 4 or 3 pin mismatch?
This motherboard:
Motherboard link
What internal connectors and fan connectors/headers are being used (reference physically numbered Pages 22 & 24)?
How are you trying to match fans to headers?