Back Panel Connectors
Chapter:
Connectors
Beckhoff New Automation Technology
CB1052
page 19
3.2 Back Panel Connectors
The board complies with the ATX form factor and thus honours the "I/O Connector Area" as defined in the
ATX specification. A range of standard connectors are available: You can connect PS/2 keyboard and
mouse, printer, display, speakers, microphone, LAN etc. If the board is mounted in a normal ATX
compliant case these connectors are located on the back side of the case. In the following sections we
will discuss each connector, going from left to right (looking onto the rear side of a desktop case) or from
top to bottom (tower case).
3.2.1 PS/2 keyboard and mouse
PS/2 mice and keyboards are connected via standard mini-DIN connectors. If you want to use the
keyboard or mouse to wake up the board from standby or suspend mode you have to activate this
functionality by adjusting the KBPWR jumper settings (see p. 47). With this jumper you can switch from
normal power supply (VCC) to standby power supply (SVCC) for keyboard/mouse. Some relevant
settings will have to be adjusted in BIOS setup.
Pinout PS/2 mouse:
Description
Name
Pin
Name
Description
mouse data
MDAT
B1
B2
N/C
reserved
ground
GND
B3
B4
(S)VCC
5 volt supply
mouse clock
MCLK
B5
B6
N/C
reserved
Pinout PS/2 keyboard:
Description
Name
Pin
Name
Description
keyboard data
KDAT
A1
A2
MDAT
mouse data
ground
GND
A3
A4
(S)VCC
5 volt supply
keyboard clock
KCLK
A5
A6
MCLK
mouse clock
