I need to know how to remove my info from my lexmark 4270 series before I trade it in.

Hello,

1.Disconnect the power cable from the back of the printer.

2. Hold down the Stop/Clear button. (To the right of the Black Copy button.)

3.While keeping the button pressed down, reconnect the power cable. A message on the LCD will display MEMORY CLEARING.
Note: The Fax, Copy and Scan buttons will remain ON until the message disappears. Only the Fax button should be ON when the function is complete.

Thanks for using Fixya.