Samsung ML-4512ND-XAA - Manual (Page 43)

Media and tray
43 2. Menu overview and basic setup
ML-5015 Series/ ML-5017 Series
1 Press Setup from the Main screen.
2 Press System > Paper > Next.
3 Press the tray you want.
4 Press Paper Size > Select the option you want.
5 Press the button.
6 Press Paper Type > Select the option you want.
7 Press the home icon ( ) to return to the Standby mode.