Asrock Z270 Killer SLI User Manual

Version 1.0

Published November 2016

Copyright©2016 ASRock INC. All rights reserved.

Copyright Notice:

No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.

Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to

infringe.

Disclaimer:

Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.

In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.

is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that

may cause undesired operation.

CALIFORNIA, USA ONLY

e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”

ASRock Website: http://www.asrock.com

AUSTRALIA ONLY

Our goods come with guarantees that cannot be excluded under the Australian
Consumer Law. You are entitled to a replacement or refund for a major failure and
compensation for any other reasonably foreseeable loss or damage caused by our
goods. You are also entitled to have the goods repaired or replaced if the goods fail
to be of acceptable quality and the failure does not amount to a major failure. If
you require assistance please call ASRock Tel : [phone] ext.123 (Standard
International call charges apply)

e terms HDMI™ and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.

Contents

Chapter 1 Introduction 1

1.1 Package Contents 1

1.2 Specications 2

1.3 Motherboard Layout 7

1.4 I/O Panel 9

1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antenna
(for Z270 Killer SLI/ac only) 12

Chapter 2 Installation 14

2.1 Installing the CPU 15

2.2 Installing the CPU Fan and Heatsink 18

2.3 Installing Memory Modules (DIMM) 19

2.4 Expansion Slots (PCI Express Slots) 21

2.5 Jumpers Setup 22

2.6 Onboard Headers and Connectors 23

2.7 SLITM and Quad SLITM Operation Guide 28

2.7.1 Installing Two SLITM-Ready Graphics Cards 28

2.7.2 Driver Installation and Setup 30

2.8 CrossFireXTM and Quad CrossFireXTM Operation Guide 31

2.8.1 Installing Two CrossFireXTM-Ready Graphics Cards 31

2.8.2 Driver Installation and Setup 33

2.9 M.2_SSD (NGFF) Module Installation Guide 34

Chapter 3 Software and Utilities Operation 37

3.1 Installing Drivers 37

3.2 A-Tuning 38

3.2.1 Installing A-Tuning 38

3.2.2 Using A-Tuning 38

3.3 ASRock Live Update & APP Shop 41

3.3.1 UI Overview 41

3.3.2 Apps 42

3.3.3 BIOS & Drivers 45

3.3.4 Setting 46

3.4 Enabling USB Ports for Windows® 7 Installation 47

3.5 ASRock AURA RGB LED 50

Chapter 4 UEFI SETUP UTILITY 51

4.1 Introduction 51

4.2 EZ Mode 52

4.3 Advanced Mode 53

4.3.1 UEFI Menu Bar 53

4.3.2 Navigation Keys 54

4.4 Main Screen 55

4.5 OC Tweaker Screen 56

4.6 Advanced Screen 64

4.6.1 CPU Conguration 65

4.6.2 Chipset Conguration 67

4.6.3 Storage Conguration 70

4.6.4 Intel® Thunderbolt™ 71

4.6.5 Super IO Conguration 72

4.6.6 ACPI Conguration 73

4.6.7 USB Conguration 75

4.6.8 Trusted Computing 76

4.7 Tools 77

4.8 Hardware Health Event Monitoring Screen 80

4.9 Security Screen 83

4.10 Boot Screen 84

4.11 Exit Screen 86

Z270 Killer SLI/ac / Z270 Killer SLI

Chapter 1 Introduction

ank you for purchasing ASRock Z270 Killer SLI/ac / Z270 Killer SLI

motherboard, a reliable motherboard produced under ASRock’s consistently

stringent quality control. It delivers excellent performance with robust design

conforming to ASRock’s commitment to quality and endurance.

In this documentation, Chapter 1 and 2 contains the introduction of the

motherboard and step-by-step installation guides. Chapter 3 contains the operation

guide of the soware and utilities. Chapter 4 contains the conguration guide of

the BIOS setup.

Becau se the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In case any
modications of this documentation occur, the updated version will be available on
ASRock’s website w ithout f urther notice. If you require technical support relate d to
this motherboard, please vi sit our website for s pecic information about the model
you are using. You may nd the l atest VGA cards and CPU suppor t list on ASRock’s
website a s well. ASRock website ht tp://www.a srock.com.

1.1 Package Contents

ASRock Z270 Killer SLI/ac / Z270 Killer SLI Motherboard (ATX Form Factor)

•

ASRock Z270 Killer SLI/ac / Z270 Killer SLI Quick Installation Guide

•

ASRock Z270 Killer SLI/ac / Z270 Killer SLI Support CD

•

1 x I/O Panel Shield

•

2 x Serial ATA (SATA) Data Cables (Optional)

•

1 x ASRock SLI_HB_Bridge_2S Card (Optional)

•

2 x Screws for M.2 Sockets (Optional)

•

2 x ASRock WiFi 2.4/5 GHz Antennas (Optional) (for Z270 Killer SLI/ac only)

•

English

1

1.2 Specications

Platform

CPU

Chipset

Memory

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•

•

•

•

•

•

•

•

•

•

* Please refer to Memory Support List on ASRock's website for

more information. (http://www.asrock.com/)

** 7th Gen Intel® CPU supports DDR4 up to 2400; 6th Gen Intel®

CPU supports DDR4 up to 2133.

•

•

•

•

ATX Form Factor

Supports 7th and 6th Generation Intel® CoreTM i7/i5/i3/

Pentium®/Celeron® Processors (Socket 1151)

Digi Power design

8 Power Phase design

Supports Intel® Turbo Boost 2.0 Technology

Supports Intel® K-Series unlocked CPUs

Supports ASRock BCLK Full-range Overclocking

Intel® Z270

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

Supports DDR4 3733+(OC)*/3600(OC)/3200(OC)/2933(OC)

/2800(OC)/2400**/2133 non-ECC, un-buered memory

Supports ECC UDIMM memory modules (operate in non-

ECC mode)

Max. capacity of system memory: 64GB

Supports Intel® Extreme Memory Prole (XMP) 2.0

15μ Gold Contact in DIMM Slots

English

2

Expansion
Slot

2 x PCI Express 3.0 x16 Slots (PCIE2/PCIE4: single at x16

•

(PCIE2); dual at x8 (PCIE2) / x8 (PCIE4))*

* Supports NVMe SSD as boot disks

4 x PCI Express 3.0 x1 Slots (Flexible PCIe)

•

Supports AMD Quad CrossFireXTM and CrossFireXTM

•

Supports NVIDIA® Quad SLITM and SLI

•

1 x Vertical M.2 Socket (Key E) with the bundled WiFi-

•

802.11ac module (on the rear I/O)

15μ Gold Contact in VGA PCIe Slot (PCIE2)

•

TM

Graphics

Z270 Killer SLI/ac / Z270 Killer SLI

Intel® HD Graphics Built-in Visuals and the VGA outputs

•

can be supported only with processors which are GPU

integrated.

Supports Intel® HD Graphics Built-in Visuals : Intel® Quick

•

Sync Video with AVC, MVC (S3D) and MPEG-2 Full

HW Encode1, Intel® InTruTM 3D, Intel® Clear Video HD

Technology, Intel® InsiderTM, Intel® HD Graphics

Gen9 LP, DX11.3, DX12

•

HWAEncode/Decode: VP8, HEVC 8b, VP9, HEVC 10b (For

•

7th Gen Intel® CPU)

HWA Encode/Decode: VP8 , HEVC 8b; GPU/SWEncode/

•

Decode: VP9, HEVC 10b (For 6th Gen Intel® CPU)

Max. shared memory 1024MB

•

* e size of ma ximum shared memory may vary from dierent

operating systems.

Dual graphics output: Support DVI-D and HDMI ports by

•

independent display controllers

Supports HDMI with max. resolution up to 4K x 2K

•

(4096x2160) @ 24Hz / (3840x2160) @ 30Hz

Supports DVI-D with ma x. resolution up to 1920x1200 @

•

60Hz

Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and

•

HBR (High Bit Rate Audio) with HDMI Port (Compliant

HDMI monitor is required)

Supports HDCP with DVI-D and HDMI Ports

•

Supports Full HD 1080p Blu-ray (BD) playback with DVI-D

•

and HDMI Ports

Audio

7.1 CH HD Audio with Content Protection (Realtek ALC892

•

Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection (ASRock Full Spike Protection)

•

Nichicon Fine Gold Series Audio Caps

•

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3

LAN

Wireless
LAN (for
Z270 Killer
SLI/ac
only)

Rear Panel
I/O

Gigabit LAN 10/100/1000 Mb/s

•

Giga PHY Intel® I219V

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection (ASRock Full Spike

•

Protection)

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

Intel® 802.11ac WiFi Module (Free Bundle)

•

Supports IEEE 802.11a/b/g/n/ac

•

Supports Dual-Band (2.4/5 GHz)

•

Supports high speed wireless connections up to 433Mbps

•

Supports Bluetooth 4.0 / 3.0 + High speed class II

•

2 x Antenna Ports (for Z270 Killer SLI/ac only)

•

1 x PS/2 Mouse/Keyboard Port

•

1 x DVI-D Port

•

1 x HDMI Port

•

1 x Optica l SPDIF Out Port

•

5 x USB 3.0 Type-A Ports (Supports ESD Protection (ASRock

•

Full Spike Protection))

1 x USB 3.0 Type-C Port (Supports ESD Protection (ASRock

•

Full Spike Protection))

1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED

•

LED)

HD Audio Jacks: Rear Speaker / Central / Bass / Line in /

•

Front Speaker / Microphone

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4

Storage

6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,

•

RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology

15 and Intel Smart Response Technology), NCQ, AHCI and

Hot Plug*

* If M2_1 is occupied by a SATA-type M.2 device, SATA_5 will

be disabled.

* If M2_2 is occupied by a SATA-type M.2 device, SATA_0 will

be disabled.

2 x Ultra M.2 Sockets, support type 2230/2242/2260/2280

•

M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module

up to Gen3 x4 (32 Gb/s)**

Connector

Z270 Killer SLI/ac / Z270 Killer SLI

** Supports Intel® OptaneTM Technology

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

1 x COM Port Header

•

1 x TPM Header

•

1 x Chassis Intrusion Header

•

1 x Power LED and Speaker Header

•

1 x AURA RGB LED Header

•

1 x CPU Fan Connector (4-pin)

•

* e CPU Fan Connector supports the CPU fan of ma ximum

1A (12W) fan power.

2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Con-

•

trol)

1 x Chassis Optional/Water Pump Fan Connector (4-pin)

•

(Smart Fan Speed Control)

* e Chassis Optional/Water Pump Fan supports the water

cooler fan of maximum 1.5A (18W) fan power.

* CHA_FAN2 can auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

1 x underbolt AIC Connector (5-pin)

•

1 x underbolt AIC Connector (10-pin)

•

* Only one underbolt AIC Card is supported.

3 x USB 2.0 Headers (Support 5 USB 2.0 ports) (Supports

•

ESD Protection (ASRock Full Spike Protection))

1 x USB 3.0 Header (Supports 2 USB 3.0 ports) (Supports

•

ESD Protection (ASRock Full Spike Protection))

BIOS
Feature

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

CPU, GT_CPU, DRAM, VPP, PCH 1.0V, VCCIO, VCCST,

•

VCCSA, VCCPLL Voltage Multi-adjustment

English

5

Hardware
Monitor

OS

Certica­tions

CPU / Chassis / Chassis Optional/Water Pump temperature

•

sensing

CPU / Chassis / Chassis Optional/Water Pump Fan Tachom-

•

eter

CPU / Chassis / Chassis Optional/Water Pump Quiet Fan

•

(Auto adjust chassis fan speed by CPU temperature)

CPU / Chassis / Chassis Optional/Water Pump Fan multi-

•

speed control

CASE OPEN detection

•

Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM,

•

VPP, PCH 1.0V, VCCIO, VCCSA, VCCST

Microso® Windows® 10 64-bit (For 7th Gen Intel® CPU)

•

Microso® Windows® 10 64-bit / 8.1 64-bit / 7 32-bit / 7 64-

•

bit (For 6th Gen Intel® CPU)

* To install Windows® 7 OS, a modied installation disk with

xHCI drivers packed into the ISO le is required. Please refer to

page 47 for more detailed instructions.

* For the updated Windows® 10 driver, please visit ASRock ’s

website for details: http://ww w.asrock.com

FCC, CE, WHQL, RCM, BSMI

•

ErP/EuP ready (ErP/EuP ready power supply is required)

•

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6

* For detailed product information, please visit our website: http://ww w.asrock.com

Please realize that the re is a certain r isk involved with overclo cking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technol ogy, or using
third-party overclocking tool s. Overclocking may aect your system’s stability, or
even cause dam age to the components and devices of your system. It should be done
at your own risk and expense. We are not responsible for poss ible damage caused by
overclocking.

1.3 Motherboard Layout

Intel

Z270

DDR 4_A2 (64 bit, 288- pin modu le)

DDR 4_A1 (64 bit, 288- pin modu le)

DDR 4_B2 (64 bit, 288- pin modu le)

DDR 4_B1 (64 bit, 288- pin modu le)

ATX12V1

ATXP WR 1

Top:

Central/Bass

Center :

REAR SPK

Top:

LINE IN

Center :

FRONT

Bottom :

Optica l

SPDIF

Bottom :

MIC I N

HDLED R ESET

PLED PWRBTN

PANEL1

1

1

SPK_PLE D1

1

HD_AUDI O1

SATA_4_5

USB_1_2

1

CPU_FAN1

1

TPMS1

CHA_FAN3 /W_PUMP

USB3_5_ 6

1

CLRMOS1

1

M2_W IFI1*

BIOS
ROM

RGB_LED 1

1

PCIE1

M2_1

CTCTCT CT24

23

22 21

CHA_FAN2

CHA_FAN1

COM1

1

PCIE2

RoH S

Ult ra M .2

PCIe G en3 x4

HDMI 1

USB 3. 0

T:U SB1

B: USB 2

PS2

Keybo ard

/Mous e

DVI 1

Top:
RJ-45

USB 3. 0
T: USB3
B: USB 4

USB 3.0
T:US B3_TA_1
B: USB3_T C_1

PCIE3

PCIE5

PCIE6

PCIE4

CMO S

Bat tery

M2_2

CTCTCT CT24

23

22 21

SATA_2_3

SATA_0_1

USB_3_4

1

USB_5

1

TB2

1

TB1

1

CI1

1

Z270 Killer SLI/ac / Z270 Killer SLI

English

7

No. Description

1 ATX 12V Power Connector (ATX12V1)

2 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

3 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

4 CPU Fan Connector (CPU_FAN1)

5 ATX Power Connector (ATXPWR1)

6 USB 3.0 Header (USB3_5_6)

7 SATA3 Connectors (SATA_4_5)

8 SATA3 Connectors (SATA_2_3)

9 SATA3 Connectors (SATA_0_1)

10 System Panel Header (PANEL1)

11 Power LED and Speaker Header (SPK_PLED1)

12 Chassis Fan / Waterpump Fan Connector (CHA_FAN3/W_PUMP)

13 Chassis Fan Connector (CHA_FAN1)

14 USB 2.0 Header (USB_1_2)

15 USB 2.0 Header (USB_3_4)

16 Chassis Intrusion Header (CI1)

17 USB 2.0 Header (USB_5)

18 AURA RGB LED Header (RGB_LED)

19 Clear CMOS Jumper (CLRMOS1)

20 underbolt AIC Connector (TB2)

21 TPM Header (TPMS1)

22 COM Port Header (COM1)

23 Front Panel Audio Header (HD_AUDIO1)

24 underbolt AIC Connector (TB1)

25 Chassis Fan Connector (CHA_FAN2)

* e Wirele ss LAN is supported on Z270 Killer SLI/ac only.

English

8

1.4 I/O Panel

Z270 Killer SLI/ac

1

Z270 Killer SLI/ac / Z270 Killer SLI

6

2

3

547

15

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 9 Optica l SPDIF Out Port

2 USB 3.0 Type-A Port (USB3_TA_1) 10 USB 3.0 Ports (USB3_3_4)

3 LAN RJ-45 Port* 11 USB 3.0 Type-C Port (USB3_TC_1)

4 Central / Bass (Orange) 12 DVI-D Port

5 Rear Speaker (Black) 13 Antenna Ports

6 Line In (Light Blue) 14 USB 3.0 Ports (USB3_1_2)

7 Front Speaker (Lime)** 15 HDMI Port

8 Microphone (Pink)

891013 111214

English

9

Z270 Killer SLI

1

6

2

3

547

English

14

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 8 Microphone (Pink)

2 USB 3.0 Type-A Port (USB3_TA_1) 9 Optica l SPDIF Out Port

3 LAN RJ-45 Port* 10 USB 3.0 Ports (USB3_3_4)

4 Central / Bass (Orange) 11 USB 3.0 Type-C Port (USB3_TC_1)

5 Rear Speaker (Black) 12 DVI-D Port

6 Line In (Light Blue) 13 USB 3.0 Ports (USB3_1_2)

7 Front Speaker (Lime)** 14 HDMI Port

8910111213

10

Z270 Killer SLI/ac / Z270 Killer SLI

* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .

ACT/LINK L ED

SPEED LE D

LAN Por t

Activity / Link LED Speed LED

Status Description Status Description

O No Link O 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection

** If you use a 2- channel speaker, plea se connect the speake r’s plug into “Front Speaker Jack”. See the table below

for connection d etails in accordance w ith the type of speaker you use.

Audio Output

Channels

Front Speaker

(No. 7)

Rear Speaker

(No. 5)

Central / Bass

(No. 4)

2 V -- -- --
4 V V -- --
6 V V V --
8 V V V V

To enable Multi-Streaming, you need to connect a front panel audio cable to the
front panel audio header. Aer restarting your computer, you will nd the “Mixer”
tool on your system. Plea se select “Mixe r ToolBox” , click “Enabl e playba ck
multi-streaming”, and click “ok”. Choose “2CH”, “4CH”, “6CH”, or “8CH” and then
you are all owed to select “Realtek HDA Primary out put” to u se the Rear Speak er,
Central/Bas s, and Front Speaker, or select “Realtek HDA Audio 2nd output” to u se
the front panel au dio.

Line In

(No. 6)

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11

1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz
Antenna (for Z270 Killer SLI/ac only)

WiFi-802.11ac + BT Module

is motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ac + BT v4.0

module (pre-installed on the rear I/O panel) that oers support for WiFi 802.11 a/b/

g/n/ac connectivity standards and Bluetooth v4.0. WiFi + BT module is an easy-to-

use wireless local area network (WLAN) adapter to support WiFi + BT. Bluetooth

v4.0 standard features Smart Ready technology that adds a whole new class of

functionality into the mobile devices. BT 4.0 also includes Low Energy Technology

and ensures extraordinary low power consumption for PCs.

* e transmission speed may vary according to the environment.

WiFi + BT Module

(pre-installed Intel® Dual Band

Wireless-AC 3160)

ASRock WiFi 2.4/5 GHz Antennas

(included in the package)

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12

WiFi Antennas Installation Guide

Z270 Killer SLI/ac / Z270 Killer SLI

Step 1

Prepare the WiFi 2.4/5 GHz Antennas that come

with the package.

Step 2

Connect the two WiFi 2.4/5 GHz Antennas to

the antenna connectors. Turn the antenna clock-

wise until it is securely connected.

Step 3

Set the WiFi 2.4/5 GHz Antenna as shown in the

illustration.

*You may need to adjust the direction of

the antenna for a stronger signal.

English

13

Chapter 2 Installation

is is an ATX form factor motherboard. Before you install the motherboard, study

the conguration of your chassis to ensure that the motherboard ts into it.

Pre-installation Precautions

Take note of the following precautions before you install motherboard components

or change any motherboard settings.

Make sure to unplug the power cord before installing or removing the motherboard

•

components. Failure to do so may cause physical injuries and damages to motherboard

components.

In order to avoid damage from static electricity to the motherboard’s components,

•

NEVER place your motherboard directly on a carpet. Also remember to use a grounded

wrist strap or touch a safety grounded object before you handle the components.

Hold components by the edges and do not touch the ICs.

•

Whenever you uninstall any components, place them on a grounded anti-static pad or

•

in the bag that comes with the components.

When placing screws to secure the motherboard to the chassis, please do not over-

•

tighten the screws! Doing so may damage the motherboard.

English

14

2.1 Installing the CPU

1. Before you inser t the 1151-Pin CPU into the socket, please check if the PnP ca p
is on the socket, if the CPU sur face is unclean, or if th ere are any b ent pins in the
socket. Do not force to insert the CPU into the socket if above situ ation is found.
Other wise, the CPU wil l be seriously d amaged.

2. Unplug all power cables before installing the CPU.

1

Z270 Killer SLI/ac / Z270 Killer SLI

A

B

2

English

15

3

4

English

16

5

Z270 Killer SLI/ac / Z270 Killer SLI

Please save and replace the cover if the processor i s removed. e cover must be
placed if you wish to return the motherboard for aer service.

17

English

2.2 Installing the CPU Fan and Heatsink

1 2

English

18

FAN

CPU_

Z270 Killer SLI/ac / Z270 Killer SLI

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,

and supports Dual Channel Memory Technology.

1. For dual channel conguration, you always need to install identical (the same

brand, speed , size and chip-type) DDR4 DIMM pairs.

2. It is unable to activate Dual Channel Memory Technology with only one or three
memor y module installed.

3. It is not allowed to install a DDR , DDR2 or DDR3 memor y module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.

Dual Channel Memory Conguration

Priority DDR4_ A1 DDR4_ A2 DDR4_B1 DDR4_B2

1 Populated Populated
2 Populated Populated
3 Populated Populated Populated Populated

e DIMM only ts in one correct orientation. It will cause permanent dam age to
the mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation .

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Z270 Killer SLI/ac / Z270 Killer SLI

2.4 Expansion Slots (PCI Express Slots)

ere are 6 PCI Express slots on the motherboard.

Before installing an ex pansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Plea se read the documentation of the
expan sion card and mak e necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

PCIE3 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.

PCIE5 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE6 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIe Slot Congurations

PCIE2 PCIE4

Single Graphics Card x16 N/A

Two Graphics Cards in

CrossFireXTM or SLITM

Mode

For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1, CHA_ FA N2 or CHA_FAN3 ) when using mul­tiple graphics cards.

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2.5 Jumpers Setup

e illustration shows how jumpers are setup. When the jumper cap is placed on

the pins, the jumper is “Short”. If no jumper cap is placed on the pins, the jumper

is “Open”. e illustration shows a 3-pin jumper whose pin1 and pin2 are “Short”

when a jumper cap is placed on these 2 pins.

Clear CMOS Jumper

(CLRMOS1)

(see p.7, No. 19)

CLRMOS1 allows you to clear the data in CMOS. To clear and reset the system

parameters to default setup, please turn o the computer and unplug the power

cord from the power supply. Aer waiting for 15 seconds, use a jumper cap to

short pin2 and pin3 on CLRMOS1 for 5 seconds. However, please do not clear the

CMOS right aer you update the BIOS. If you need to clear the CMOS when you

just nish updating the BIOS, you must boot up the system rst, and then shut it

down before you do the clear-CMOS action. Please be noted that the password,

date, time, and user default prole will be cleared only if the CMOS battery is

removed.

Clear CMOSDefault

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