3-Pin Chassis fans in 4-Pin Motherboard headers(AIO Pump, CPU optional)

[sharingan5]

I have a Asus ROG Strix B350-F Gaming. I've connected 2 front fans(3-pin) to the lower two headers on the motherboard. Thats working fine.

I have 3 other fans(2 on top and 1 on the backside). Generic Deepcool Red LED 3-pin stuff. They have a 3-pin header and a molex header.
Can I connect them to the AIO Pump/CPU optional headers?
CPU Optional header is below the CPU fan header.
AIO pump is near the back fan, and also has a chassis fan header beside it.

 

[Zerk2012]

They should work anywhere.