Asus K8N-LR - Manual (Page 35)

ASUS K8N-LR 2-15
2.5.5 PCI/PCI-X slots
The PCI/PCI-X slots support cards such as a LAN card, USB card, and other
cards that comply with PCI 2.3 and PCI-X 1.0 specifications. The figure
shows a LAN card installed on a 32-bit PCI slot and a RAID card on a 64-bit
PCI-X slot.
32-bit PCI slot
64-bit PCI-X slot
PCI-X Frequency
PCI-X 1 slot PCI-X 2 slot Frequency
(PCIX1) (PCIX2)
populated -- 133MHz
-- populated 133MHz
populated populated 100MHz
The PCI-X frequency vary depending on the PCI-X slot configuration. Refer
to the table below for PCI-X slot setup and corresponding frequency.