V7-MERCURY P-64 (PCI) Jumpers The V7-MERCURY P-64 (VL) has two jumpers, the PCI version has one jumper. Jumper No. 1 (only VL, shown as JP1 on the board) activates or deactivates the VGA part on the graphics board. Jumper position 1-2 (default): VGA part enabled Jumper position 2-3: VGA part disabled (as secondard board in the system) Jumper No. 2 (as JP2 on the board) activates or deactivates the Interrupt Requests. Jumper position 1-2 (default): IRQ is disabled Jumper position 2-3: IRQ is enabled.