Manual

ASUS P5K3 Premium 2-17
2.5.7 AI Slot Detector
This motherboard comes with
on-board LEDs that light up
when the PCIE/PCI devices are
not correctly installed. When
the power cord is plugged in
and the LED lights up, reinstall
the device correctly. Refer to
the gure on the right for the
location of the LEDs.
The PCIEx16_1 slot (blue) supports PCIE x16 cards only. The AI Slot Detector
lights up when you install a x1 or x4 card to this slot.
Primary PCI Express x16 slot
The primary PCI Express x16 slot supports PCI Express x16 graphic cards that
comply with the PCI Express specications.
Universal PCI-E slot (max. x4 mode)
This motherboard also supports a Universal PCI-E slot with a maximum speed of 2
GB/s. The operating frequency of this slot changes, depending on the type of PCI
Express card you install. Refer to the table below for details.
The gure shows two graphics cards installed on the primary PCI Express x16 slot
and the Universal PCI-E slot.
If you install two VGA cards, we recommend that you plug the rear chassis
fan cable to the motherboard connector labeled CHA_FAN1 for better thermal
environment. See page 2-26 for the connector location.
• Some PCI Express graphics cards cannot operate on x4/x1 mode. We
suggest that you install these cards on the primary PCI Express slot (blue)
to increase system stability.
• Some PCI Express devices cannot operate on x4/x1 mode.
Options for Universal PCI Express operating speed
PCI Express slot
Auto Automatically optimizes performance
and functionality according to devices
installed
x4 mode [fast] User gets the best performance but this
mode disables the PCI Express x1 slot
x1 mode [compatible] Always runs at PCI Express x1 speed
P5K3 PREMIUM
®
P5K3 PREMIUM Slot Detector
DET_PCIEX1_1
DET_PCIEX1_2
DET_X16_1
DET_PCI1
DET_PCI2
DET_X16_2
DET_PCI3