Asus P5LD-MR - Manual (Page 38)

2-18 Chapter 2: Hardware information
2.5.6 PCI slots
The PCI slots support cards such as
a LAN card, SCSI card, USB card, and
other cards that comply with PCI 2.2
specifications. The figure shows a LAN
card installed on a 32-bit PCI slot.
2.5.5 PCI Express x8 slot
This motherboard supports PCI Express
x8 network cards, SCSI cards, and other
cards that comply with PCI Express 1.0a
specifications.
PCI Express x8 slot
2.5.4 PCI Express x16 slot
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.
A PCI Express card may run
only at x4 speed due to chipset
limitation.