You might want to try the "Tom's Hardware" forums: http://www.tomshardware.com/forum/forum-30.html
Anyway, according to the Asus page for that mobo, it supports up to 4x DIMMs, max of 64GB, so I don't see why it wouldn't work:
Memory
4 x DIMM, Max. 64GB, DDR4 3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666(O.C.)/2400/2133 MHz Non-ECC, Un-buffered Memory
4 x DIMM, Max. 64GB, DDR4 3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666(O.C.)/2400/2133 MHz Non-ECC, Un-buffered Memory
