Here is the board from JAY CAR with only the power supply section of the board fitted and the RFID reader.
What i have done is keep items in the correct places per the instructions - even IF i use the component for a different job than originally intended.
If you want to JUST connect your board to a PC - look carefully - remember the old saying - measure twice - cut once.
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The parts ommitted are for either driving buzzers - driving relays - or processor timing (none of which are required)
The bottom view of the board looks like this
As you can see there are 5 wire jumpers.
Descriptions follow
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