LAPTOP asus x93s RAM EXPANSION?

HAVE AN ASUS X93S LAPTOP THAT HAS FOUND 4 GB OF RAM SCHEICHER HAVE SEEN THAT IT HAD UP TO 4 RAM STORAGE BOXES I HAVE PURCHASED NOW 2 × JE 8GB RAM STORAGE SO 16GB CAN I LEAVE THE OLD RAM ALSO UP THEN IT IS 20GB RAM OR MUST THE 4GB RAM DAN RUDE ALTHOUGH I HAVE RAMP. LG

Why are you screaming? That's why there's no faster answer!

Writing in caps just makes it more uncomfortable to read