JP1-4 is used for setting IRQ, 2 is the common, 3 is the DB9, 1 is the DB25

JP1234
commonIRQ5IRQ4IRQ3IRQ2

JP5-8 is used for setting iobase, 2 is the common, 1 is the DB9, 3 is the DB25

JP5678
common<2e83e82f83f8