Voltage Blaster is a very simple circuit, which provides -5V through ISA slot for systems with power supply which don't provide such voltage. It was created in cooperation of PhilsComputerLab with Necroware. Project Links: https://github.com/necroware/voltage-blaster https://www.philscomputerlab.com/voltage-blaster--5v.html Introduction video by Phil: https://www.youtube.com/watch?v=y1-0giyLQIY