3Expansion

H/W .

SETUPCards

3. HARDWARE SETUP

Interrupt Request Table for this Motherboard

Interrupt requests are shared as shown by the following table:

 

A

B

C

D

E

F

G

H

PCI slot 1

—

—

—

—

—

shared

—

—

PCI slot 2

—

—

—

—

—

—

not shared

—

PCI slot 3

—

—

—

—

—

—

—

shared

PCI slot 4

—

—

—

—

shared

—

—

—

PCI slot 5

—

—

—

—

—

shared

—

—

PCI slot 6

—

— not shared

—

—

—

—

—

Onboard VGA

shared

—

—

—

—

—

—

—

Onboard USB controller HC0

—

—

— not shared

—

—

—

—

Onboard USB controller HC1

—

—

—

—

—

—

—

shared

AGP Pro

shared

—

—

—

—

—

—

—

CNR LAN

—

—

—

—

shared

—

—

—

CNR Audio/Modem

—

not shared

—

—

—

—

—

—

IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support “Share IRQ” or that the cards do not need IRQ assignments. Conflicts will arise between the two PCI groups that will make the system unstable or cards inoperable.

3.7.3 Communication and Networking Riser (CNR) Slots

These connectors support specially designed network, audio, or modem riser cards. Main processing is done through software and controlled by the motherboard’s system chipset. This provides upgradeable network, audio, and/or modem solutions at an incredibly low cost.

NOTE: CNRs are not included with this motherboard.

CUSL2

CUSL2 Communication & Networking Riser Connectors

CNR Restrictions:

1.Only one audio CNR can be used, and it must be primary and inserted into CNR slot 1.

2.If both an audio CNR and modem CNR are used, the modem CNR must be secondary.

3.The modem CNR must be primary if no audio CNR is used.

4.Only one LAN CNR can be supported.

5.When a USB hub CNR card is used, USB ports 5 and 6 will not function.

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ASUS CUSL2 User’s Manual