Noob RAM question

[Truebrit]

I have 2X 4GB Corsair Vengeance Pro 2133MHz, can I get the same and have 16GB. I'm not sure what duel/quad channel mean, my board specs are below.

Asus Z87-A

4 x DIMM, Max. 32GB, DDR3 3000(O.C.)/2933(O.C.)/2800(O.C.)/2666(O.C.)/2600(O.C.)/2500(O.C.)/2400(O.C.)/2200(O.C.)/2133(O.C.)/2000(O.C.)/1866(O.C.)/1800(O.C.)/1600/1333 MHz Non-ECC, Un-buffered Memory

Dual Channel Memory Architecture

 

[Eternalec]

Yeah, just be sure get the same frequency/clock rates ones. Or just the same RAM like you have.