4 ms·What were the PRN and AUX files used for?by mvkg 5y agoWhat were the PRN and AUX files used for?Karellen 5y agoPRN was for the printer. AUX is for "auxiliary" (aka "misc."/"other") device - i.e. any other bit of unspecified random hardware you'd managed to hook up with a custom driver by yourself.mkup 5y agoAUX is just a synonym for COM1, i.e. first serial port in DOS/Windows.