No part of this manual, including the products and software described in it, may be reproduced,
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permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
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DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
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• Two DDR3L 1866/1600/1333 MHz Non-ECC Un-buffered SO-DIMMs up to 8GB
• 2 x SATA 6Gb/s, 4 x USB 3.2 Gen 1, 2 x USB 2.0, 6 x COM headers
• 1 x PCIe 2.0 x1 slot (colay with M.2 E Key), 1 x Full/Half-size PCIe mini card
slot (w/SIM holder), 1 x M.2 Socket 1 with E key
• Multi-display: 1 x VGA, 1 x HDMI, 1 x DisplayPort++, 1 x LVDS, 1 x Embedded
DisplayPort (BOM colay with LVDS,optional), HDMI + VGA + LVDS,
VGA+HDMI+eDP, DP+HDMI+LVDS, DP+HDMI+eDP
Chapter 1: General information
1-1
1.3 Specifications
CPU
Memory
Graphics
Expansion slots
Storage
Ethernet
AudioRealtek® ALC887 High Denition Audio
Thin Mini-ITX Form Factor, 6.7”x 6.7” (17.0cm x 17.0cm)
NOTE: Specications are subject to change without notice.
Chapter 1: General information
1-3
Chapter 2
Motherboard information
2.1 Before you proceed
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
CAUTION!
• Unplug the power cord from the wall socket before touching any
component.
• Before handling components, use a grounded wrist strap or touch a safely
grounded object or a metal object, such as the power supply case, to avoid
damaging them due to static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic
pad or in the bag that came with the component.
• Before you install or remove any component, always remove the AC power
by unplugging the power cord from the power outlet. Failure to do so may
cause severe damage to the motherboard, peripherals, or components.
Chapter 2: Motherboard information
2-1
2.2 Motherboard layout
NOTE: Place four screws into the holes indicated by circles to secure the
motherboard to the chassis.
CAUTION! Do not overtighten the screws! Doing so can damage the
motherboard.
Place this side
towards the rear
of the chassis
31
30
29
28
27
12 3 4 578 9 26
LPC_DEBUG
8Mb
BIOS
SPI_TPM
PANEL_SW
Realtek
8111H
Realtek
8111H
BATTERY
CPU_FAN
®
®
WDT_EN
AT_ATX_SEL
NANO_SIM
PCIEX1
CLRTC
GPIO_CON
24
Intel
J3455/
N3350/
N4200
SoC
M.2(WIFI)
DC_PWR
VGA
U32G1_12
U32G1_34
HDMI
LAN1_LAN2
AUDIO
ATX12V
DP
ALC
887
AAFP
26 25
17.0cm(6.7in)
®
LVDS_EDP
22
23
I2C
ATX_5VSB
DDR3L So-DIMM_B1 (64bit, 204-pin module)
DDR3L So-DIMM_A1 (64bit, 204-pin module)
COM1COM2COM3COM4COM5COM6
20
USBE34
MPCIE_MSATA
VCC_PWR_SEL
BKLPWR_SEL
19
18
Super
I/O
21
LCD_BLKT_PANEL
CHA_FAN
USBE12
SATA6G_2
F_PANEL
17
KBMS_CON
J3455T-IM-A
COM1_SEL
SATA_PWRCON
SATA6G_1
SPEAKER
16
17.0cm(6.7in)
CHASSIS
10
11
12
13
14
15
2-2
J3455T-IM-A/N3350T-IM-A/N4200T-IM-A
Connectors/Jumpers/SlotsPage
1.ATX Power connector (4-pin ATX12V)2-11
2.CPU and Chassis fan headers (4-pin CPU_FAN, 4-pin CHA_FAN)2-11
24. General Purpose Input/output header (GPIO_CON)2-19
25. RTC Battery header (2-pin BATTERY)2-19
26. Front Panel Audio header (10-1 pin AAFP)2-20
27. Panel switch (2-pin PANEL_SW)2-20
28. Nano SIM Card slot2-21
29. COM Port headers (10-1 pin COM1~COM6) 2-21
30. SPI_TPM header (14-1 pin SPI_TPM)2-22
31. LPC Debug header (10-1 LPC_DEBUG)2-22
Chapter 2: Motherboard information
2-3
2.3 Central Processing Unit (CPU)
The motherboard comes with an onboard Intel
N3350/N4200.
®
Celeron® Quad-core processor J3455/
®
Intel
J3455/
N3350/
J3455T-IM-A
N4200
SoC
2-4
J3455T-IM-A/N3350T-IM-A/N4200T-IM-A
2.4 System memory
J3455T-IM-A
DIMM_B1
DIMM_A1
3
2
This motherboard comes with two Double Data Rate 3 Low Voltage (DDR3L) Small
Outline Dual Inline Memory Modules (SO-DIMM) socket. The gure illustrates the
location of the DDR3L DIMM socket:
Channel
Channel ADIMM_A1
Channel BDIMM_B1
IMPORTANT!
• You may install varying memory sizes in Channel A and Channel B. The
system maps the total size of the lower-sized channel for the dual-channel
conguration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Always install the DIMMS with the same CAS Latency. For an optimum
compatibility, we recommend that you install memory modules of the same
version or data code (D/C) from the same vendor. Check with the vendor to
get the correct memory modules.
• According to Intel® CPU spec, DIMM voltage below 1.35V is recommended
to protect the CPU.
NOTE: Visit the ASUS website at www.asus.com for the latest QVL.
Sockets
To install a SO-DIMM
Chapter 2: Motherboard information
To remove a SO-DIMM
2
3
2-5
2.5 Jumpers
1. Clear RTC RAM (2-pin CLRTC)
This header allows you to clear the CMOS RTC RAM data of the system
setup information such as date, time, and system passwords.
CLRTC
Connector type
J3455T-IM-A
HEADER 1x2p, 2.54mm pitch, S/T
GND
+3V_BAT
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Use a metal object such as a screwdriver to short the two pins.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup
to re-enter data.
NOTE: If the steps above do not help, remove the onboard battery and move
the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS,
reinstall the battery.
2-6
J3455T-IM-A/N3350T-IM-A/N4200T-IM-A
2. WDT Enable jumper (2-pin WDT_EN)
A watchdog timer is an electronic timer that is used to detect and recover
from computer malfunctions. The HW WDT (watchdog timer) Enable jumper
allows the HW watchdog resets the system automatically even when the
system crashes.
WDT_EN
212 3
jumper closed
(Default)
J3455T-IM-A
Connector type
NOTE: By default, this jumper is set to HW WDT enabled with a jumper cap
attached.
HEADER 1x2p, 2.54mm pitch, S/T
3. AT/ATX mode selection (3-pin AT_ATX_SEL)
AT_ATX_SEL
212 3
jumper closed
(Default)
J3455T-IM-A
jumper removed
jumper removed
Pins
1-2 (Default)ATX mode
2-3AT mode
Connector type
HEADER 1x3p, 2.54mm pitch, S/T
Chapter 2: Motherboard information
2-7
J3455T-IM-A
PIN 1
GND
O_CASEOPEN
+5VSB_ATX
CHASSIS
4. COM Ring/+5V/+12V selection (6-pin COM1_SEL)
COM1_SEL
J3455T-IM-A
123456
+5V+12V
RI
(Default)
SettingPins
12V1-2
5V3-4
Ring (Default)5-6
5. Chassis intrusion header (4-1 pin_CHASSIS)
This header is for a chassis-mounted intrusion detection sensor or switch. Connect
one end of the chassis intrusion sensor or switch cable to this connector. The
chassis intrusion sensor or switch sends a low-level signal to this connector
when a chassis component is installed. The signal is then generated as a chassis
intrusion event.
2-8
Connector type
HEADER 4p, K2, 2.54mm pitch
J3455T-IM-A/N3350T-IM-A/N4200T-IM-A
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