Status: OK
It is used for programming AVR controller and Arduino compatible boards using the parallel port.
checking:
$ avrdude -patmega88 -cdapa
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e930a
avrdude: safemode: Fuses OK
avrdude done. Thank you.
part value R1 470 R2 220 R3 470 X1 X2