Asus M2N-L - Manual (Page 35)

ASUS M2N-L 2-
2.5.6 PCI slot
The PCI slot supports 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 slot
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.