4 pci express x16 slot (x8 link), Pci bus number, idsel, and irq assignments, Asus p5bv series 2-17 – Asus P5BV/SAS User Manual
Page 37: For add-in graphics cards, it only run x1 link
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ASUS P5BV Series
2-17
Description
INTA
INTB
INTC
INTD
REQ#
GNT#
PCIE1
PIRQA#
PCIX2
PIRQA#
PIRQB#
PIRQC#
PIRQD
REQ2#
GNT2#
PCIX3
PIRQB#
PIRQC#
PIRQD#
PIRQA#
REG0
GNT0
PCI4
PIRQG#
PIRQH#
PIRQE#
PIRQF#
REG0
GNT0
PCI5
PIRQH#
PIRQE#
PIRQF#
PIRQG#
REG1
GNT1
Onboard USB Controller1
PIRQH#
Onboard USB Controller2
PIRQD#
Onboard USB Controller3
PIRQC#
Onboard USB2.0 Controller
PIRQH#
Onboard LAN1
PIRQA#
Onboard LAN2
PIRQB#
Onboard VGA
PIRQF#
Onboard IDE Controller
PIRQC#
Onboard SATA Controller
PIRQD#
PCI Bus Number, IDSEL, and IRQ assignments
2.5.4
PCI Express x16 slot (x8 link)
This motherboard supports PCI Express
x16 graphics cards that comply with the
PCI Express specifications. The following
figure shows a graphics card installed on
the PCI Express x16 slot.
For add-in graphics cards, it only run x1 link