Apple released Thunderbolt 3 to Thunderbolt 2 adapter. Is it possible to connect an external device using type C (ie ASUS MB169B+) by connecting the Thunderbolt 3 to Thunderbolt 2 adapter with an Thunderbolt cable into the Mac (this is an older Mac before 2015)?

Can the MacBook (which only supports Thunderbolt 2) fully access the device which supports type C? The transmission traffic still won't compare with the real Thunderbolt 3 speeds but at least the Thunderbolt 2 ports are not useless!