DTK Computer Apex 386/40 User Manual page 49

Coprocessor Option (Jumper J11)
J11 is used to enable or disable the coprocessor.
Keyboard Connector (Jumper 513)
This connector is located at the back of your system unit. Any AT-com-
patible keyboard with a 5-pin DIN connector may be used. The pin
assignments for keyboard connector J13 are as follows:
Power Supply Connector (Jumper 514)
This connector is provided for the power supply. It is important that this
connector be correctly connected; if not, the mainboard may be
damaged. Information on connecting your power supply may be found
in the Connection to Power Supply section.
1 Keyboard CI
4 Ground
Chapter 2: Setting Up Your System
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