Lenovo N21 Chromebook Manual de usuario

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

Chapter 2

2.1 screw holes

Place screws into the holes to secure the motherboard to the chassis .

Place screws into the hold to secure the bottom panel to the chassis .

2.1 Pre-installation precautions

Take note of the following precautions before you install motherboard

components or change any motherboard settings.

1. Unplug the power cord from the wall socket before touching any

component .

2. To avoid damaging the motherboard components due to static

electricity, Never place your motherboard directly on the carpet or

the like . Also remember to use a grounded wrist strap or touch a

safety grounded object before you handle components .

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

4. Whenever you uninstall any component, place it on a grounded

antistatic pad or in the bag that comes with the component .

2.3Installation Memory Modules

Please make sure to disconnect power supply before adding or removing

So-DIMMs or the system components.

Step1. Unlock a SO-DIMM slot by pressing the retaining clips outward.

Step2. Align a SO-DIMM on the slot such that the notch on the

SO-DIMM matches the break on the slot

2.4 Onboard headers and Connectors

FCC WARNING

This 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.

Any changes or modifications not expressly approved by the party responsible for compliance

could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B

digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This equipment

generates, uses and can radiate radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception,

which can be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect the equipment into an outlet on a circuit different

from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help.

To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be

installed and operated with minimum distance between 20cm the radiator your body: Use

only the supplied antenna.

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