D. Rozsnyó: Fan control This module allows you to select 7V or 12V and switch 4 fans independently set_lpt_data.c, 723 B fan-control-set.jpeg, 103.4 KB (1024×768) fan-control-pcb.jpeg, 112.3 KB (1024×768) fan-control-schematics.pdf, 11.5 KB (1 page) [ Hardware ]