Asus Motherboard P5B-E - Manual (Page 44)

2-20 Chapter 2: Hardware information
2.5.4 PCI slots
The PCI slots support cards such as
a LAN card, SCSI card, USB card,
and other cards that comply with PCI
specifications. The figure shows a LAN
card installed on a PCI slot.
2.5.5 PCI Express x1 slots
This motherboard supports PCI Express
x1 network cards, SCSI cards and other
cards that comply with the PCI Express
specifications. The following figure
shows a network card installed on the
PCI Express x1 slot.
2.5.6 PCI Express x16 slot
This motherboard has one PCI Express
x16 slots that support PCI Express x16
graphic cards complying with the PCI
Express specifications.