11Hardware Specifications
CN4
External card reader connector with the following pin-outs:
Pin Function (Clock and Data) Function (Weigand)
1 GND GND
2 +5v +5v
3 Card Detect Data0
4 Clock Data1
5 Data N/C
CN11
The jumper on CN11 connects pin 4 of the AUX port to either 5v or Vin. By default there is no
jumper on this selector, therefore no voltage appears on pin 4 of the AUX port.
JB1
Jumper Block 1 has six individual jumpers labelled A through F. These jumpers determine various
states for the inputs from the DB15 connector.
By default none of the jumpers are set.
WARNING: Never set jumpers A and B on at the same time. Doing so will short un-regulated
voltage (Vin) on to the 5v power rail for the board. This will almost immediately destroy the main
board’s chipset.