guys i have a B450 Aorus Elite V2 Motherboard and i got 3 new case fans XPG Vento Pro 120mm so they have a chain connection and if anyone can help me, is it okay to connect all 3 of them to the same motherboard header?
Ah, that fan looks awfully similar to the Scythe Gentle Typhoon fans. That being said; https://www.xpg.com/us/xpg/691?tab=spec
the max power draw per fan is 0.16A. For 3 of them, they would need/draw = 0.48A. Generally a PWM fan header on a motherboard is rated to provide a max of 1A, at least that's what's stated on Asus motherboard's and on higher end Gigabyte boards.
You're good to daisychain the 3 fans and plug them onto one header.
Moved thread to Cooling section from Motherboard's section.