Pci Slots - Asus PC-DL Deluxe User Manual

2.6.3 PCI slots

There are five 32-bit PCI slots on this motherboard. The slots support PCI
cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications.
When installing long PCI cards, it is recommended that you install
them in PCI slots 1, 4, or 5. Long PCI cards installed in PCI slots 2 and
3 may interfere with the SATA connectors.
2-16 Chapter 2: Hardware information