How many fans can be connected to one 4-pin header?

V

Ventus2020-11-12 16:02:26

Iron

Ventus, 2020-11-12 16:02:26

There is an ASRock B460M-HDV motherboard. It has only two connectors for case fans (4-pin). There are also five fans that are connected in series with each other (Arctic Cooling F12 PWM PST Value pack).

Question: how safe is it to connect three case fans to one 4-pin connector at once? Can the motherboard handle this load?

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3 answer(s)

V

Ventus, 2020-11-12
@Ventus

https://download.asrock.com/Manual/B460M-HDV.pdf - page 9. It is written that 2A can be connected to one Fan / WP. So, you can connect 3 fans (one eats about 0.1 A).

R

Ronald McDonald, 2020-11-12
@Zoominger

In general, of course, it is undesirable.
I would just buy a 3-pin to molex adapter and connect it to the power supply.

D

Dmitry Roo, 2020-11-12
@xez

I wouldn't use more than two.
On aliexpress, look for "pwm hub" - there is one with additional power, they cost a penny.