Intermec PENKEY 6100 Programmer's Reference Manual page 203

SECTION 6
INT 14h, Function AH = 05h: Extended Port Control
4000API
On Entry:
On Return:
INT 14h, Function AH = FFh: Port Power Off or On
4000API
On Entry:
On Return:
R
PEN*KEY 6100 Computer Programmer's Reference Guide
Conversions and Interfaces
6-67