AXIOMTEK CEM521 User manual

4 9418D521000E
© Copyright 2020 Axiomtek Co., Ltd.
Versio A1 July 2020
Pri ted i Taiwa
Note: When installing CEM521 on CEB94011, please add stand-off and secure
with nut. Then, use the screws to secure the heatsink plate to the
CEM521.
Quick Start
The basic procedures required to power on CEM521:
(1). Make sure the power is OFF before connecting the CEM521.
(2). Check to ensure the onboard switch W1-1 and W1-2 are set to
default (OFF position).
(3). Firmly install DDR4 O-DIMM in DIMM1 (on top side of the
board)/ DIMM1 (on bottom side of the board) until fully seated. For
single memory channel configuration, install memory module in
channel 0 (DIMM1) DDR4 O-DIMM socket. For dual memory
channel configuration, install memory modules of the same size, chip
width, density and rank in both channel 0 (DIMM1) and channel 1
( DIMM1) DDR4 O-DIMM sockets.
(4). Attach heatsink to the CEM521, refer to section Installing Thermal
olution.
(5). Install the CEM521 onto the suggested COM Express
TM
baseboard,
CEB94011 .
(6). Properly install all necessary peripheral devices such as hard disk,
display, keyboard and etc. to the baseboard.
(7). Firmly attach power supply to the baseboard power connector.
(8). Turn on the system power.
(9). Press power button on the baseboard to start CEM521.
CEM521 Quick Installation Guide
9418D521000E 1
© Copyright 2020 Axiomtek Co., Ltd.
Versio A1 July 2020
Pri ted i Taiwa
Checklist
CEM521 Board x1 Quick Installation Guide x1
Note: Please contact your local vendors if any damaged or missing items. DO
NOT apply power to the board if there is any damaged component.
Module Layout
Top View
CEM521 COM Express
TM
Type 6 Compact Module
For user manual, drivers, certificates and technical
support, please visit our product website or scan
QR code.
http://www.axiomtek.com.tw/Default.aspx?MenuId=P
roducts&FunctionId=ProductView&ItemId=25354&C
=CEM521&upcat=332

2 9418D521000E
© Copyright 2020 Axiomtek Co., Ltd.
Versio A1 July 2020
Pri ted i Taiwa
Bottom View
Switch Settings
Before applying power to the CEM521, please make sure onboard switches
are in factory default positions.
Switch Description Setting
SW1
Auto Power On
Default: Disable SW1-1 OFF
Restore BIOS Optimal Defaults
Default: Normal Operation SW1-2 OFF
Connector
Connector Description
CN1 Fan Connector
BAT CMOS Battery Connector
SS1 COM Express
TM
Connector
SS2 COM Express
TM
Connector
DIMM1 Channel 0 DDR4 SO-DIMM Socket
SDIMM1 Channel 1 DDR4 SO-DIMM Socket
9418D521000E 3
© Copyright 2020 Axiomtek Co., Ltd.
Versio A1 July 2020
Pri ted i Taiwa
Installing Thermal Solution
For thermal dissipation, a thermal solution enables the CEM521’s
components to dissipate heat efficiently. All heat generating components
are thermally conducted to the heatsink in order to avoid hot spots. Below
images illustrate how to install the thermal solution.
1. There is a protective plastic covering on the thermal pads. This must be
removed before the heatsink can be mounted.
2. Each heatsink is designed for a specific CEM module. The thermal
pads on the heatsink are designed to make contact with the necessary
components on the CEM module. When mounting the heatsink you
must make sure that the thermal pads on the heatsink make complete
contact (no space between thermal pad and component) with the
corresponding components on the CEM module. This is especially
critical for CEM modules that have higher CPU speeds (for example
1.0GHz or more) to ensure that the heatsink acts as a proper thermal
interface for cooling solutions.
3. This CPU module has six assembly holes for installing heatsink plate.
Use the six screws to secure the heatsink plate to the CEM521. Be
careful not to over-tighten the screws.