Asus H81M-C/CSM Manual

A SERVICE OF

next previous

1-10

Chapter 1: Product introduction

1.5.3 PCI Express 2.0 x1 slots

This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that

comply with the PCI Express specications.

1.5.4 PCI Express x16 slot

This motherboard has a PCI Express x16 slot that supports PCI Express x16 graphic cards

complying with the PCI Express specications.

1.5.3 PCI slots

The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications.

1.6 Jumpers

1. Clear RTC RAM (3-pin CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can

clear the CMOS memory of date, time, and system setup parameters by erasing

the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in

CMOS, which include system setup information such as system passwords.

IRQ assignments for this motherboard

H81M-C

H81M-C Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

A B C D E F G H

LAN

– – shared – – – – –

PCIE x16_1

shared – – – – – – –

PCIE x1_1

– – shared – – – – –

PCIE x1_2

– – – shared – – – –

PCIE x1_3

shared – – – – – – –

Intel PCH SATA Controller

– – – shared – – – –

HD Audio

– – – – – – shared –

USB2.0_1

– – – – – – – shared

USB2.0_2

– – – – shared – – –

USB3.0

– – – – – shared – –

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.