ASROCK J3455B-ITX User manual

Version 1.0
Published August 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 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
1
J3455B-ITX
J3355B-ITX
Motherboard Layout
PCIE1
ATXPWR1
11
AUDIO
CODEC
10
3
DDR3_B1
DDR3_A1
CPU_FAN1
PANEL1
1
HDL ED R ES ET
PLED PWRBTN
1
SPEAKER1
COM2
1
CMOS
Battery
RoHS
1
HD_AUDIO1
1
4
6
8
9
14
BIOS
ROM
Front USB 3.0
LAN
CLRMOS1
1
USB3_1_2
16
1
USB2_3
1
USB4_5
13
SATA3_1SATA3_2
12
2
7
1
CI1
RJ-45 LAN
USB 3.0
T: USB3
B: USB4
HDMI1
Top:
LINE IN
Center:
FRONT
Bottom:
MIC IN
USB 2.0
T: USB0
USB 3.0
B: USB1
PS2
Keyboard
PS2
Mouse
PARALLEL PORT
COM1 VGA1
TPMS1
1
5
15

English
2
No. Description
1 2 x 204-pin DDR3L SO-DIMM Slots (DDR3_A1, DDR3_B1)
2 CPU Fan Connector (CPU_FAN1)
3 ATX Power Connector (ATXPWR1)
4TPM Header (TPMS1)
5 SATA3 Connector (SATA3_1)
6 System Panel Header (PANEL1)
7 Chassis Fan Connector (CHA_FAN1)
8Chassis Speaker Header (SPEAKER1)
9 USB 3.0 Header (USB3_1_2)
10 USB 2.0 Header (USB4_5)
11 USB 2.0 Header (USB2_3)
12 Clear CMOS Jumper (CLRMOS1)
13 COM Port Header (COM2)
14 Chassis Intrusion Header (CI1)
15 SATA3 Connector (SATA3_2)
16 Front Panel Audio Header (HD_AUDIO1)

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J3455B-ITX
J3355B-ITX
810
1 2 3 5
67
9
12 1113
4
I/O Panel
No. Description No. Description
1 PS/2 Mouse Port 8 USB 2.0 Port (USB0)
2Parallel Port 9 USB 3.0 Port (USB1)
3 LAN RJ-45 Port* 10 HDMI Port
4 Line In (Light Blue)** 11 D-Sub Port
5 Front Speaker (Lime)** 12 COM Port
6 Microphone (Pink)** 13 PS/2 Keyboard Port
7 USB 3.0 Port (USB3_34)
* ere are two LEDs on each 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

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**To congure 7.1 CH HD Audio, it is required to use an HD front panel audio module and enable the multi-
channel audio feature through the audio driver.
Please set Speaker Conguration to “7.1 Speaker”in the Realtek HD Audio Manager.
Function of the Audio Ports in 7.1-channel Conguration:
Port Function
Light Blue (Rear panel) Rear Speaker Out
Lime (Rear panel) Front Speaker Out
Pink (Rear panel) Central /Subwoofer Speaker Out
Lime (Front panel) Side Speaker Out
Chapter 1 Introduction
ank you for purchasing ASRock J3455B-ITX/J3355B-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 J3455B-ITX/J3355B-ITX Motherboard (Mini-ITX Form Factor)
• ASRock J3455B-ITX/J3355B-ITX Quick Installation Guide
• ASRock J3455B-ITX/J3355B-ITX Support CD
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 1 x I/O Panel Shield

English
5
J3455B-ITX
J3355B-ITX
Chapter 1 Introduction
ank you for purchasing ASRock J3455B-ITX/J3355B-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 J3455B-ITX/J3355B-ITX Motherboard (Mini-ITX Form Factor)
• ASRock J3455B-ITX/J3355B-ITX Quick Installation Guide
• ASRock J3455B-ITX/J3355B-ITX Support CD
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 1 x I/O Panel Shield
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.

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1.2 Specications
Platform • Mini-ITX Form Factor
• Solid Capacitor design
CPU • Intel® Quad-Core Processor J3455 (up to 2.3 GHz)
(for J3455B-ITX)
• Intel® Dual-Core Processor J3355 (up to 2.5 GHz)
(for J3355B-ITX)
Memory • Dual Channel DDR3/DDR3L Memory Technology
• 2 x DDR3/DDR3L SO-DIMM Slots
* 2GB DRAM is not supported.
• Supports DDR3/DDR3L 1866/1600/1066 non-ECC, un-
buered memory
• Max. capacity of system memory: 16GB
Expansion
Slot
• 1 x PCI Express 2.0 x16 Slot (PCIE1: x2 mode)
Graphics
• Integrated Intel® HD Graphics 500: 12 EUs inside (Up to
750MHz) (for J3455B-ITX)
• Integrated Intel® HD Graphics 500: 12 EUs inside (Up to
700MHz) (for J3355B-ITX)
• DirectX 12, Pixel Shader 5.0
• Dual graphics output: support D-Sub and HDMI ports by
independent display controllers
• Supports HDMI with max. resolution up to 4K x 2K
(3840x2160) @ 30Hz or 2560x1600 @ 60Hz
• Supports D-Sub with max. resolution up to 1920x1200 @
60Hz
• Supports Auto Lip Sync, xvYCC and HBR (High Bit Rate
Audio) with HDMI Port (Compliant HDMI monitor is
required)
• Supports HW Accelerated Decoders: H.264 @ level 5.2,
HEVC (H.265) 10b @ MP level 5.1 (GPU accelerated), JPEG,
VP8, VP9
• Supports HDCP with HDMI Port
• Supports Full HD 1080p Blu-ray (BD) playback with HDMI
Port

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J3455B-ITX
J3355B-ITX
Audio • 7.1 CH HD Audio (Realtek ALC887 Audio Codec)
* To congure 7.1 CH HD Audio, it is required to use an HD
front panel audio module and enable the multi-channel audio
feature through the audio driver.
• Supports Surge Protection (ASRock Full Spike Protection)
• ELNA Audio Caps
LAN • PCIE x1 Gigabit LAN 10/100/1000 Mb/s
• Realtek RTL8111GR
• Supports Wake-On-WA N
• 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 PS/2 Mouse Port
• 1 x PS/2 Keyboard Port
• 1 x Parallel Port (ECP/EPP Support)
• 1 x Serial Port: COM1
• 1 x D-Sub Port
• 1 x HDMI Port
• 1 x USB 2.0 Port (Supports ESD Protection (ASRock Full
Spike Protection))
• 3 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: Line in / Front Speaker / Microphone
Storage • 2 x SATA3 6.0 Gb/s Connectors, support NCQ, AHCI and
Hot Plug
Connector • 1 x COM Port Header
• 1 x Chassis Intrusion Header
• 1 x TPM Header
• 1 x CPU Fan Connector (3-pin)
• 1 x Chassis Fan Connector (3-pin)
• 1 x 24 pin ATX Power Connector
• 1 x Front Panel Audio Connector

English
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• 2 x USB 2.0 Headers (Support 4 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))
* USB3_1_2 is shared with USB2_3.
BIOS
Feature
• AMI UEFI Legal BIOS with GUI support
• Supports Plug and Play
• ACPI 5.0 compliant wake up events
• Supports jumperfree
• SMBIOS 2.7 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
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
OS • Microso® Windows® 10 64-bit
* For the updated Windows® 10 driver, please visit ASRock's
website for details: http://www.asrock.com
• Linux: Ubuntu 16.10 / Fedora 25
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

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9
J3455B-ITX
J3355B-ITX
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

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2.1 Installing Memory Modules (SO-DIMM)
is motherboard provides two 204-pin DDR3/DDR3L (Double Data Rate 3)
SO-DIMM slots.
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.

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J3455B-ITX
J3355B-ITX
1
2
3

English
12
2.2 Expansion Slot (PCI Express Slot)
ere is 1 PCI Express slot on the motherboard.
PCIe slot:
PCIE1 (PCIe 2.0 x16 slot) is used for PCI Express cards with x2 lane width cards.
Warning:
To ensure better graphics compability, the BIOS is set to "boot from Onboard VGA"
as default even the user install a VGA card on PCIe slot.
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 installa-
tion.

English
13
J3455B-ITX
J3355B-ITX
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
(CLRMOS1)
(see p.1, No. 12)
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
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. 6)
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.
GND RESET#
PWRBTN
#
PLED-
PLED+
GND
HDLED-
HDLED+
1
GND
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 assign-
ments 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.

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15
J3455B-ITX
J3355B-ITX
Serial ATA3 Connectors
(SATA3_1:
see p.1, No. 5)
(SATA3_2:
see p.1, No. 15)
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 Headers
(9-pin USB2_3)
(see p.1, No. 11)
(9-pin USB4_5)
(see p.1, No. 10)
Besides one USB 2.0 port
on the I/O panel, there
are two headers on this
motherboard. Each USB
2.0 header can support
two ports.
USB 3.0 Header
(19-pin USB3_1_2)
(see p.1, No. 9)
Besides three 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. 16)
is header is for
connecting audio devices
to the front audio panel.
1
ID
IntA_P_D+
IntA_P_D-
GND
IntA_P_SSTX+
IntA_P_SSTX-
GND
IntA_P_SSRX+
Vbus
IntA_P_D+
IntA_P_D-
GND
IntA_P_SSTX+
IntA_P_SSTX-
GND
IntA_P_SSRX+
IntA_P_SSRX-
Vbus
IntA_P_SSRX-
SATA3_1SATA3_2
DUMMY
GND
GND
P+
P-
USB_PWR
P+
P-
USB_PWR
1
J_SENSE
OUT2_L
1
MIC_RET
PRESENCE#
GND
OUT2_R
MIC2_R
MIC2_L
OUT_RET

English
16
Chassis Speaker Header
(4-pin SPEAKER1)
(see p.1, No. 8)
Please connect the chassis
speaker to this header.
Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.1, No. 7)
Please connect fan cable
to the fan connector and
match the black wire to
the ground pin.
CPU Fan Connector
(3-pin CPU_FAN1)
(see p.1, No. 2)
Please connect the CPU
fan cable to the connector
and match the black wire
to the ground pin.
ATX Power Connector
(24-pin ATXPWR1)
(see p.1, No. 3)
is motherboard pro-
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
13.
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 con-
nect 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
CHA_FA
N_SPEED
FAN_VOLTAGE
GND
FA
FAN_VOLTAGE
N_SPEED
1
+5V
DUMMY
DUMMY
SPEAKER
12
1
24
13

English
17
J3455B-ITX
J3355B-ITX
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. is
feature requires a chassis
with chassis intrusion
detection design.
TPM Header
(17-pin TPMS1)
(see p.1, No. 4)
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.
PCIRST
#
FRAME
PCICLK
CCTS#1
RRTS#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRI#1
1
Signal
GND

18
Deutsch
1 Einleitung
Vielen Dank, dass Sie sich für das J3455B-ITX/J3355B-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 J3455B-ITX/J3355B-ITX-Motherboard (Mini-ITX-Formfaktor)
• ASRock J3455B-ITX/J3355B-ITX-Schnellinstallationsanleitung
• ASRock J3455B-ITX/J3355B-ITX-Support-CD
• 2 x Serial-ATA- (SATA) Datenkabel (optional)
• 1 x E/A-Blendenabschirmung
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.