SOYO SY-5EH5 User's Manual & Technical Reference page 33

Hardware Setup
Parallel Port PRT1
This parallel port is used to connect the printer or other parallel
devices.
Your Motherboard comes with one 25-pin female external parallel
connector with 25-pin flat cable.
Plug the 25-pin end of the flat cable into the PRT1 parallel
connector on the Motherboard, as shown in the figure below, then
fix the bracket to one of the slots at the back of the computer case
using a screw. After having finished this you can plug any parallel
device into the back panel connectors.
PS/2 Mouse
Connector
KB
1
5
Connector
PRT 1 COM 2
1
4 1
9
USB
1
COM 1
1
FDC
AT Keyboard
Plug the keyboard jack directly into the 5-pin female AT keyboard
connector located at the rear panel of the Motherboard.
25-pin parallel
flat cable
28
SY-5EHM/5EH5 V1.3
25-pin female external
AT Keyboard
Connector
parallel connector