Asus H81M-C User Manual

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.

Asus H81M-C Specifications

General

Memory slots type	DIMM
Number of memory slots	2
Supported memory types	DDR3-SDRAM
Maximum internal memory	16 GB
Supported memory clock speeds	1066, 1333, 1666 MHz
Processor socket	LGA 1150 (Socket H3)
Processor manufacturer	Intel
Compatible processor series	Intel Celeron, Intel Pentium
S/PDIF out connector	Yes
Number of COM connectors	1
Number of SATA connectors	4
USB 3.2 Gen 1 (3.1 Gen 1) connectors	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Audio chip	Realtek ALC887
Component for	PC
Power source type	ATX
Motherboard chipset	Intel® H81
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Windows operating systems supported	Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64
Supported storage drive interfaces	SATA II, SATA III
Maximum resolution	1920 x 1200 pixels
Maximum graphics card memory	1024 MB
Parallel processing technology support	Not supported
Cables included	SATA
LAN controller	Realtek RTL8111G
Ethernet interface type	Gigabit Ethernet
BIOS type	AMI
ACPI version	2.0a
BIOS memory size	64 Mbit

Weight and Dimensions

Depth	178 mm
Width	244 mm