regarding the title,

how to know which MOBO supports which type of casings?

i know the difference between mid-tower and full tower.
but dont know how to judge the size of the mobo for the appropriate casings

please advise....

whats the full name of the motherboard youre trying to fit in?
they usually tell you in relation to the ATX or ITX form factor.

erm what is ATX or ITX form factor?

as i understand it, ATX is the normal form factor for motherboards and the letter behind it (mATX, eATX) refers to different sizings of the motherboard which relates to different cases that it can fit into.
if they are smaller, they can obviously fit into bigger cases, but if they are larger, they cant fit into most cases.
like having an eATX (extended ATX) or ATX motherboard and trying to fit it into a smaller mATX (micro) case. it wont work because it simply doesnt fit.

ITX refers to a smaller form factor than mATX (refer to picture).

does the brand of the mobo factors in the casing as well ?
for example, an asus mobo size is different compare to msi or gigabyte?
or it all depends on the mobo decription?

nope, its an industry standard so mobos from other companies differ by functions or features.
like my gigabyte motherboard has a usb c port whereas an asus one doesnt. but the asus one has a display port whereas mine doesnt.
rgb and also differ lah if can control or not or even have in the first place

the mobo spec will tell you the size.

so best buy full tower to ensure can use for many years to come

tumpang ask,
http://www.gigabyte.com/products/product-p...spx?pid=2964#ov

this mobo, ATX?

Yes