ASROCK Q1900DC-ITX User manual

Version 1.1
Published May 2014
Copyright©2014 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.
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.
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
www.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.

English
Q1900DC-ITX
1
Motherboard Layout
PCIE1
13 12 11
AUDIO
CODEC
1
1
TPMS1
9
Super
I/O
SATA3_A1
3
PS2
Keyboard
PS2
Mouse
USB 2.0
T: USB3
B: USB4
HDMI
DDR3_B1
DDR3_A1
CPU_FAN1
1
USB1_2
HDLED RESET
PLED PWRBTN
PANEL1
1
1
SPEAKER1
COM1
1
CI1
1
SATA3_A2
CMOS
Battery
Q1900DC-ITX
RoHS
1
HD_AUDIO1
2
4
5
6
7
8
10
14
64Mb
BIOS
MINI_PCIE1
Front USB 3.0
1
LPT1
LAN
CLRCMOS1
1
USB3_1_2
SATA2_1
SATA2_2
VGA1
DVI1
Top:
RJ-45
USB 3.0
T: USB3
B: USB4
17 16 15
18
DC_JACK1
Top:
SIDE SPK
Center:
REAR SPK
Bottom:
CTR BASS
Top:
LINE IN
Center:
FRONT
Bottom:
MIC IN
SPDIF_OUT1
1
SATA_PWR2
1
SATA_PWR1
1
19
20

English
2
No. Description
1 CPU Fan Connector (CPU_FAN1)
2 2 x 204-pin DDR3 SO-DIMM Slots (DDR3_A1, DDR3_B1)
3 System Panel Header (PANEL1)
4 USB 2.0 Header (USB1_2)
5 USB 3.0 Header (USB3_1_2)
6 SATA Power Connector (SATA_PWR2)
7 SATA2 Connector (SATA2_2)
8 SATA Power Connector (SATA_PWR1)
9 Chassis Fan Connector (CHA_FAN1)
10 SATA2 Connector (SATA2_1)
11 TPM Header (TPMS1)
12 Chassis Speaker Header (SPEAKER1)
13 COM Port Header (COM1)
14 Chassis Intrusion Header (CI1)
15 Clear CMOS Jumper (CLRCMOS1)
16 SATA3 Connector (SATA3_A1)
17 Print Port Header (LPT1)
18 SATA3 Connector (SATA3_A2)
19 Front Panel Audio Header (HD_AUDIO1)
20 SPDIF Out Connector (SPDIF_OUT1)

English
Q1900DC-ITX
3
I/O Panel
No. Description No. Description
1 PS/2 Mouse Port 9 Microphone (Pink)
2 D-Sub Port 10 Central / Bass (Orange)
3 USB 2.0 Ports (USB_34) 11 USB 3.0 Ports (USB3_34)
4 LAN RJ-45 Port* 12 HDMI Port
5 Side Speaker (Gray) 13 DVI-D Port
6 Rear Speaker (Black) 14 PS/2 Keyboard Port
7 Line In (Light Blue) 15 DC Jack***
8 Front Speaker (Lime)**
1 3 4
111214
2
13 910
6
5
8
7
15
* ere are two LEDs on the LAN port. Please refer to the table below for the LAN port LED indications.
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
ACT/LINK LED
SPEED LED
LAN Port

English
4
** If you use a 2-channel speaker, please connect the speaker’s plug into “Front Speaker Jack”. See the table below
for connection details in accordance with the type of speaker you use.
Audio Output
Channels
Front Speaker
(No. 8)
Rear Speaker
(No. 6)
Central / Bass
(No. 10)
Side Speaker
(No. 5)
2V -- -- --
4V V -- --
6V V V --
8V 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. Please select “Mixer ToolBox” , click “Enable playback
multi-streaming”, and click “ok”. Choose “2CH”, “4CH”, “6CH”, or “8CH” and then
you are allowed to select “Realtek HDA Primary output” to use the Rear Speaker,
Central/Bass, and Front Speaker, or select “Realtek HDA Audio 2nd output” to use
the front panel audio.
*** Please use a 9~19V power adapter for the DC jack. is jack accepts dual barrel plugs with an inner diameter
of 2.5 mm and an outer diameter of 5.5 mm, where the inner contact is +19V (±10%) DC and the shell is GND.
Please refer to below hardware conguration for the estimated adapter power.
DRAM HDD Estimated Adapter Power
1 1 30W
1 2 45W
2 4 79W
Due to the power limitation and PCIe bandwidth (x1), the VGA card is not supported.
When you use the DC-in power adapter, please use the onboard SATA power connector to get the power for
HDDs.
2.5 mm
5.5mm

English
Q1900DC-ITX
5
Chapter 1 Introduction
ank you for purchasing ASRock Q1900DC-ITX 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.
1.1 Package Contents
• ASRock Q1900DC-ITX Motherboard (Mini-ITX Form Factor)
• ASRock Q1900DC-ITX Quick Installation Guide
• ASRock Q1900DC-ITX Support CD
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 2 x Serial ATA (SATA) Power Cables (Optional)
• 1 x I/O Panel Shield
• 1 x WiFi Module Screw
Because 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 without further notice. If you require technical support related to
this motherboard, please visit our website for specic information about the model
you are using. You may nd the latest VGA cards and CPU support list on ASRock’s
website as well. ASRock website http://www.asrock.com.

English
6
1.2 Specications
Platform • Mini-ITX Form Factor
• All Solid Capacitor design
• High Density Glass Fabric PCB
CPU • Intel® Quad-Core Processor J1900 (2 GHz)
Memory • Dual Channel DDR3/DDR3L Memory Technology
• 2 x DDR3/DDR3L SO-DIMM Slots
• Supports DDR3/DDR3L 1333/1066 non-ECC, un-buered
memory
• Max. capacity of system memory: 16GB
(see CAUTION)
Expansion
Slot
• 1 x PCI Express 2.0 x1 Slot
• 1 x mini-PCI Express Slot
* Due to the power limitation and PCIe bandwidth (x1), the
VGA card is not supported.
Graphics
• Intel® 7th generation (Gen 7) graphics (Supports Intel® Quick
Sync Video)
• DirectX 11.0, Pixel Shader 5.0
• ree graphics output options: D-Sub, DVI-D and HDMI
• Supports HDMI Technology with max. resolution up to
1920x1200 @ 60Hz
• Supports DVI-D with max. resolution up to 1920x1200 @
60Hz
• Supports D-Sub with max. 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

English
Q1900DC-ITX
7
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)
LAN • PCIE x1 Gigabit LAN 10/100/1000 Mb/s
• Realtek RTL8111GR
• Supports Wake-On-WAN
• Supports Wake-On-LAN
• Supports Lightning/ESD Protection (ASRock Full Spike
Protection)
• Supports LAN Cable Detection
• Supports Energy Ecient Ethernet 802.3az
• Supports PXE
Rear Panel
I/O
• 1 x DC Jack (Compatible with the 9~19V power adapter)
• 1 x PS/2 Mouse Port
• 1 x PS/2 Keyboard Port
• 1 x D-Sub Port
• 1 x DVI-D Port
• 1 x HDMI Port
• 2 x USB 2.0 Ports (Supports ESD Protection (ASRock Full
Spike Protection))
• 2 x USB 3.0 Ports (Supports ESD Protection (ASRock Full
Spike Protection))
• 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED
LED)
• HD Audio Jacks: Side Speaker / Rear Speaker / Central / Bass
/ Line in / Front Speaker / Microphone
Storage • 2 x SATA2 3.0 Gb/s Connectors, support NCQ, AHCI and
Hot Plug
• 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, sup-
port NCQ, AHCI and Hot Plug
Connector • 1 x Print Port Header
• 1 x COM Port Header
• 1 x TPM Header
• 1 x Chassis Intrusion Header
• 1 x CPU Fan Connector (3-pin)

English
8
• 1 x Chassis Fan Connector (3-pin)
• 2 x SATA Power Connectors
• 1 x Front Panel Audio Connector
• 1 x SPDIF Out Connector
• 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD
Protection (ASRock Full Spike Protection))
• 1 x USB 3.0 Header by ASMedia ASM1074 (Supports 2 USB 3.0
ports) (Supports ESD Protection (ASRock Full Spike Protec-
tion))
BIOS
Feature
• 64Mb AMI UEFI Legal BIOS with GUI support
• Supports Plug and Play
• ACPI 1.1 compliant wake up events
• Supports jumperfree
• SMBIOS 2.3.1 support
Hardware
Monitor
• CPU/Chassis temperature sensing
• CPU/Chassis Fan Tachometer
• CPU/Chassis Quiet Fan (Auto adjust chassis fan speed by
CPU temperature)
• CPU/Chassis Fan multi-speed control
• CASE OPEN detection
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
OS • Microso® Windows® 8.1 32-bit / 8.1 64-bit / 8 32-bit / 8 64-
bit / 7 32-bit / 7 64-bit
Certica-
tions
• FCC, CE, WHQL
• ErP/EuP ready (ErP/EuP ready power supply is required)
* For detailed product information, please visit our website: http://www.asrock.com
Due to limitation, the actual memory size may be less than 4GB for the reservation
for system usage under Windows® 32-bit operating systems. Windows® 64-bit operat-
ing systems do not have such limitations. You can use ASRock XFast RAM to utilize
the memory that Windows® cannot use.

English
Q1900DC-ITX
9
is is a Mini-ITX 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.
Failure to do so may cause physical injuries to you 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.
Chapter 2 Installation

English
10
2.1 Installing Memory Modules (SO-DIMM)
is motherboard provides two 204-pin DDR3/DDR3L (Double Data Rate 3) SO-
DIMM slots. If only one SO-DIMM module is installed, please install it into DDR3_
A1.
e SO-DIMM only ts in one correct orientation. It will cause permanent damage
to the motherboard and the SO-DIMM if you force the SO-DIMM into the slot at
incorrect orientation.
It is not allowed to install a DDR or DDR2 memory module into a DDR3/DDR3L
slot; otherwise, this motherboard and SO-DIMM may be damaged.

English
Q1900DC-ITX
11
1
2
3

English
12
2.2 Expansion Slots (PCI Express Slots)
ere are 2 PCI Express slots on the motherboard.
PCIe slots:
PCIE1 (PCIe 2.0 x1 slot) is used for PCI Express cards with x1 lane width cards.
MINI_PCIE1 (mini-PCIe slot) is used for WiFi module.
Before installing an expansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Please read the documentation of the
expansion card and make necessary hardware settings for the card before you start the
installation.

English
Q1900DC-ITX
13
2.3 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
(CLRCMOS1)
(see p.1, No. 15)
CLRCMOS1 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 CLRCMOS1 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
If you clear the CMOS, the case open may be detected. Please adjust the BIOS option
“Clear Status” to clear the record of previous chassis intrusion status.

English
14
2.4 Onboard Headers and Connectors
System Panel Header
(9-pin PANEL1)
(see p.1, No. 3)
Connect the power
switch, reset switch and
system status indicator on
the chassis to this header
according to the pin
assignments below. Note
the positive and negative
pins before connecting
the cables.
PWRBTN (Power Switch):
Connect to the power switch on the chassis front panel. You may congure the way to
turn o your system using the power switch.
RESET (Reset Switch):
Connect to the reset switch on the chassis front panel. Press the reset switch to restart
the computer if the computer freezes and fails to perform a normal restart.
PLED (System Power LED):
Connect to the power status indicator on the chassis front panel. e LED is on when
the system is operating. e LED keeps blinking when the system is in S1/S3 sleep state.
e LED is o when the system is in S4 sleep state or powered o (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. e LED is on when
the hard drive is reading or writing data.
e front panel design may dier by chassis. A front panel module mainly consists
of power switch, reset switch, power LED, hard drive activity LED, speaker and etc.
When connecting your chassis front panel module to this header, make sure the wire
assignments and the pin assignments are matched correctly.
Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over
these headers and connectors. Placing jumper caps over the headers and connectors
will cause permanent damage to the motherboard.

English
Q1900DC-ITX
15
Serial ATA2 Connectors
(SATA2_1:
see p.1, No. 10)
(SATA2_2:
see p.1, No. 7)
ese two SATA2
connectors support SATA
data cables for internal
storage devices with up to
3.0 Gb/s data transfer rate.
Serial ATA3 Connectors
(SATA3_A1:
see p.1, No. 16)
(SATA3_A2:
see p.1, No. 18)
ese two SATA3
connectors support SATA
data cables for internal
storage devices with up to
6.0 Gb/s data transfer rate.
USB 2.0 Header
(9-pin USB1_2)
(see p.1, No. 4)
Besides two USB 2.0 ports
on the I/O panel, there
is one header on this
motherboard. is USB
2.0 header can support
two ports.
USB 3.0 Header
(19-pin USB3_1_2)
(see p.1, No. 5)
Besides two USB 3.0 ports
on the I/O panel, there
is one header on this
motherboard. is USB
3.0 header can support
two ports.
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 19)
is header is for
connecting audio devices
to the front audio panel.
SATA2_2
SATA2_1
SATA3_A2
SATA3_A1
DUMMY
GND GND
+B
-B
+A
-A
USB_PWR USB_PWR
1
1
IntA_PB_D+
Dummy
IntA_PB_D-
GND
IntA_PB_SSTX+
GND
IntA_PB_SSTX-
IntA_PB_SSRX+
IntA_PB_SSRX-
Vbus
Vbus
IntA_PA_SSRX-
IntA_PA_SSRX+
GND
IntA_PA_SSTX-
IntA_PA_SSTX+
GND
IntA_PA_D-
IntA_PA_D+

English
16
Chassis Speaker Header
(4-pin SPEAKER1)
(see p.1, No. 12)
Please connect the chassis
speaker to this header.
SPDIF Out Connector
(2-pin SPDIF_OUT1)
(see p.1, No. 20)
Please connect the
SPDIF_OUT connector of
a HDMI VGA card to this
header with a cable.
Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.1, No. 9)
Please connect fan cable
to the fan connector and
match the black wire to
the ground pin.
CPU Fan Connectors
(3-pin CPU_FAN1)
(see p.1, No. 1)
Please connect the CPU
fan cable to the connector
and match the black wire
to the ground pin.
SATA Power Connectors
(4-pin SATA_PWR1)
(see p.1, No. 8)
(4-pin SATA_PWR2)
(see p.1, No. 6)
Please connect a SATA
power cable.
1. High Denition Audio supports Jack Sensing, but the panel wire on the chassis must
support HDA to function correctly. Please follow the instructions in our manual and
chassis manual to install your system.
2. If you use an AC’97 audio panel, please install it to the front panel audio header by
the steps below:
A. Connect Mic_IN (MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for the HD audio panel only. You don’t need to
connect them for the AC’97 audio panel.
E. To activate the front mic, go to the “FrontMic” Tab in the Realtek Control panel
and adjust “Recording Volume”.
GND
FAN_VOLTAGE
FAN_SPEED
GND
FAN_VOLTAGE
FAN_SPEED
SPDIFOUT
GND
1
1
+12VGND
+5V GND

English
Q1900DC-ITX
17
Chassis Intrusion Header
(2-pin CI1)
(see p.1, No. 14)
is motherboard supports
CASE OPEN detection feature
that detects if the chassis cove
has been removed. This feature
requires a chassis with chassis
intrusion detection design.
TPM Header
(17-pin TPMS1)
(see p.1, No. 11)
is connector supports Trusted
Platform Module (TPM) system,
which can securely store keys,
digital certicates, passwords,
and data. A TPM system also
helps enhance network security,
protects digital identities, and
ensures platform integrity.
Serial Port Header
(9-pin COM1)
(see p.1, No. 13)
is COM1 header
supports a serial port
module.
Print Port Header
(25-pin LPT1)
(see p.1, No. 17)
is is an interface
for print port cable
that allows convenient
connection of printer
devices.
1
GND SMB_DATA_MAIN
LAD2
LAD1
GND
S_PWRDWN#
SERIRQ#
GND
PCICLK
PCIRST#
LAD3
+3V
LAD0
+3VSB
GND
FRAME SMB_CLK_MAIN
1
AFD#
ERROR#
PINIT# GND
SLIN#
STB#
SPD0
SPD1
SPD2
SPD3
SPD4
SPD5
SPD6
SPD7
ACK#
BUSY
PE
SLCT

18
Deutsch
1 Einleitung
Vielen Dank, dass Sie sich für das Q1900DC-ITX von ASRock entschieden haben –
ein zuverlässiges Motherboard, das konsequent unter der strengen Qualitätskontrolle
von ASRock hergestellt wurde. Es liefert ausgezeichnete Leistung mit robustem
Design, das ASRocks Streben nach Qualität und Beständigkeit erfüllt.
1.1 Lieferumfang
• ASRock Q1900DC-ITX-Motherboard (Mini-ITX-Formfaktor)
• ASRock Q1900DC-ITX-Schnellinstallationsanleitung
• ASRock Q1900DC-ITX-Support-CD
• 2 x Serial-ATA- (SATA) Datenkabel (optional)
• 1 x Serial ATA (SATA) Netzkabel (optional)
• 1 x E/A-Blendenabschirmung
• 1 x WLAN-Modulschraube
Da die technischen Daten des Motherboards sowie die BIOS-Soware aktualisiert werden
können, kann der Inhalt dieser Dokumentation ohne Ankündigung geändert werden.
Falls diese Dokumentation irgendwelchen Änderungen unterliegt, wird die aktualisierte
Version ohne weitere Hinweise auf der ASRock-Webseite zur Verfügung gestellt. Sollten
Sie technische Hilfe in Bezug auf dieses Motherboard benötigen, erhalten Sie auf unserer
Webseite spezischen Informationen über das von Ihnen verwendete Modell. Auch nden
Sie eine aktuelle Liste unterstützter VGA-Karten und Prozessoren auf der ASRock-
Webseite: ASRock-Webseite http://www.asrock.com.