2 9418D842000E
©
Copyright 2015 Axiomtek Co., Ltd.
Version A1 May 2015
Printed in Taiwan
Bottom View
Switch Settings
Before applying power to the CEM842/843, please make sure all of the
switches are in factory default positions.
Switch
Description
Setting
Auto Power On
Default: Disable
SW1-1 OFF
SW1
Restore BIOS Optimal Defaults
Default: Normal Operation
SW1-2 OFF
Connectors
Connector
Description
DIMM1
Channel 1 DDR3L SO-DIMM Socket
DIMM2
Channel 0 DDR3L SO-DIMM Socket
SS1 COM
Express
TM
Connector
SS2 COM
Express
TM
Connector
9418D842000E 3
©
Copyright 2015 Axiomtek Co., Ltd.
Version A1 May 2015
Printed in Taiwan
Installing Heatsink
For thermal dissipation, a thermal solution enables the CEM842/843’s
components to dissipate heat efficiently. All heat generating components
are thermally conducted to the heatsink in order to avoid hot spots. Figure
below illustrates how to install the thermal solution on CEM842/843.
1. There is a protective plastic covering on the thermal pads. This must be
removed before the heatspreader can be mounted.
2. Each thermal solution is designed for a specific CEM module. The
thermal pads on the heatspreader are designed to make contact with
the necessary components on the CEM module. When mounting the
heatspreader you must make sure that the thermal pads on the
heatspreader 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 1.46GHz or more) to ensure that the
heatspreader acts as a proper thermal interface for cooling solutions.
3. Before installing the heatspreader to the CPU module, please apply
thermal grease on the CPU die. This CPU module has four assembly
holes for installing heatspreader plate. Use the four screws to secure
the heatspreader plate to the CEM842/843. Be careful not to over-
tighten the screws. Then, apply thermal grease at the bottom of
heatsink and secure the heatsink on the heatspreader by another four
screws.
