no makers name told. ACer?or make COLORFUL.
post photo of this mobo or tell where you bought it , or what PC it was removed from or post link to where you see it for sale (OMG best)
first the pin count correct, 3 or 4 pins.
lost the heatsink too for CPU.
the right fan matches the heat sink first. not told. yours.
and fan diameter is next. not told by you in mm.
intel CPU , LGA 1155
my wild guess is standard Intel fan + heat sink assembly snap on fan base. to mobo ,no screws. the Acer BY SAME NAME ive no clue no ACER PC model told if is acer.
if is intel heat sink we can replace the fan, easy using diameter match and connetor 3 or 4 pin match, all are 12vdc or PDM (4p) modulated. up to 12v.
got this fan HS assembly or lost it all or was the fan part stolen?
here is my 1155 intel, the fan can not be removed or replaced
ever, only the whole things
so you you posted a photo of your, omg , make this so easy ?