Lenovo N21 Chromebook User manual

N21
User Manual
Version 1.0
Published June 2021

Content
1. Introduction............................................................................................................................1
1.1 Specification......................................................................................................................2
1.2 Package Contents..........................................................................................................3
1.3 I/O Panel………………………………………………………………………………………………….4
2. Installation..............................................................................................................................4
2.1 Screw Holes.......................................................................................................................5
2.2 Pre-installation Precautions..........................................................................................6
2.3 Installation of Memory Modules.............................................................................. 6
2.4Onboard Headers and Connectors........................................................................ 6

Precaution
The motherboard is made up of many sophisticated integrated circuits and
other components that are easily damaged by static electricity, Please read the
manual and prepare the following instructions before installation:
Please confirm that the size of the chassis is consistent with the
motherboard before installation.
Please do not tear up the serial number and agent warranty sticker on
the motherboard before installation, otherwise it will affect standard of product
warranty.
To install or remove the motherboard and other hardware devices, please
be sure to turn off the power before, and removal of power cord from outlet.
When you install other hardware devices to the motherboard socket, make
sure the interface and socket is closely.
Take the motherboard, please try your best to avoid touching the metal
connection parts to avoid short circuits in the line. Take the motherboard, CPU
or when the memory, it is best to wear anti-static bracelet.
If no ESD bracelet, make sure your hands dry, and touch the metal to
dissipate the static charge. Before the boards are not installed, first placed in
anti-static mat or anti-static bags.
When you want to remove the motherboard power supply when the plug
from the socket, make sure that power supply is turned off. In before power on
make sure that the power supply voltage of the voltage value is set in the area
of standard values in make sure all hardware devices before turning on the
power supply cable and the power cord is correctly connected.
Do not let the screw contacts on the motherboard circuit or part to avoid
Board damage or failure.
Please make sure that no screws or metal in or on the motherboard inside
the computer chassis. Do not place the computer in unstable.

Chapter 1: Introduction
1.1Specification
Package Contents
N21 Main Host
Vesa Bracket
Screw Package
Model
N21
Processor
Intel Celeron J4125（quad core，2.0 GHz, Turbo boost 2.7 GHz）
Chipset
Adopt Intel express chipset
RAM
1*SODDR4(can up to 16G)
Display port
Integrated Intel HD Graphic card, Support 1*HDMI,1*DP
Expansion port
1*Mini-PCIE,, 1*M.2 2230 support WiFi
Storage
1* M.2 2280 support SATA
Audio
N/A
Network
4* Intel I210AT 1000M Lan, support wake on lan
I /O
4* RJ-45
1* 12V DC input
1* HDMI,1*DP
2 *USB 3.0, 1*Type C, 1*Micro USB
1*Power switch
1* Power Led, 1* HDD led
Built-in I/O
1 * FP1
1 * J2
1 * JSATA Port, 1*SATA
1 * SODIMM
1 * CPU_Fan
BIOS
AMI 64M DPI Flash ROM
WDT
Support hardware reset (256 level，0~255 sec)
Power supply
DC-12V
Temp
-20℃～60℃
Humidity
0～95% relative humidity, non-condensing
Dimension
144*126.5*46 CM

1.3 I/O Panel