IEI Technology iQ7-BT, iQ7-BT-E38251, iQ7-BT-E38251W2, iQ7-BT-E38451, iQ7-BT-E38451W2 User Manual

iQ7-BT Qseven Module

MODEL:

iQ7-BT

Qseven® Rev. 2.0 Module with

22nm Intel® Atom™/Celeron® Processor,

2 GB/4 GB DDR3L, and RoHS Compliant

User Manual

Rev. 1.01 – June 29, 2017

Page i

iQ7-BT Qseven Module

Revision

Date Version Changes

June 29, 2017 1.01 Clarified BIOS specifications

March 23, 2015 1.00 Initial release

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iQ7-BT Qseven Module

COPYRIGHT NOTICE

The information in this document is subject to change without prior notice in order to

improve reliability, design and function and does not represent a commitment on the part

of the manufacturer.

In no event will the manufacturer be liable for direct, indirect, special, incidental, or

consequential damages arising out of the use or inability to use the product or

documentation, even if advised of the possibility of such damages.

This document contains proprietary information protected by copyright. All rights are

Copyright

reserved. No part of this manual may be reproduced by any mechanical, electronic, or

other means in any form without prior written permission of the manufacturer.

TRADEMARKS

All registered trademarks and product names mentioned herein are used for identification

purposes only and may be trademarks and/or registered trademarks of their respective

owners.

Page iii

iQ7-BT Qseven Module

Table of Content s

1 INTRODUCTION.......................................................................................................... 1

1.1 INTRODUCTION........................................................................................................... 2

1.2 FEATURES................................................................................................................... 2

1.3 MODEL VARIATIONS ................................................................................................... 3

1.4 BOARD OVERVIEW..................................................................................................... 4

1.5 DIMENSIONS............................................................................................................... 5

1.6 DATA FLOW................................................................................................................6

1.7 TECHNICAL SPECIFICATIONS ...................................................................................... 7

2 PACKING LIST.............................................................................................................9

2.1 ANTI-STATIC PRECAUTIONS...................................................................................... 10

2.2 UNPACKING PRECAUTIONS....................................................................................... 10

2.3 PACKING LIST............................................................................................................11

2.4 OPTIONAL ITEMS...................................................................................................... 12

3 INSTALLATION ......................................................................................................... 13

3.1 ANTI-STATIC PRECAUTIONS...................................................................................... 14

3.2 INSTALLATION CONSIDERATIONS.............................................................................. 14

3.3 QSEVEN CONNECTOR PINOUTS ................................................................................ 16

MOUNTING IQ7-BT TO BASEBOARD .......................................................................... 20

3.4

3.5 SOFTWARE INSTALLATION ........................................................................................ 22

3.5.1 Starting the Driver Program............................................................................ 22

3.5.2 Available Software Drivers .............................................................................. 24

4 BIOS.............................................................................................................................. 26

4.1

INTRODUCTION......................................................................................................... 27

4.1.1 Starting Setup................................................................................................... 27

4.1.2 Using Setup...................................................................................................... 27

4.1.3 Getting Help..................................................................................................... 28

4.1.4 Unable to Reboot after Configuration Changes.............................................. 28

4.1.5 BIOS Menu Bar................................................................................................ 28

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iQ7-BT Qseven Module

MAIN........................................................................................................................ 29

4.2

4.3 ADVANCED ............................................................................................................... 30

4.3.1 ACPI Settings................................................................................................... 31

4.3.2 IT8528 Super IO Configuration....................................................................... 32

4.3.2.1 Serial Port n Configuration....................................................................... 32

4.3.3 iWDD H/W Monitor......................................................................................... 34

4.3.3.1 Smart Fan Mode Configuration................................................................ 35

4.3.4 RTC Wake Settings........................................................................................... 36

4.3.5 Serial Port Console Redirection...................................................................... 37

4.3.6 CPU Configuration.......................................................................................... 40

4.3.7 IDE Configuration........................................................................................... 42

4.3.8 T rusted Computing........................................................................................... 43

4.3.9 USB Configuration........................................................................................... 44

4.3.10 Security Configuration................................................................................... 45

4.4

CHIPSET ................................................................................................................... 46

4.4.1 North Bridge .................................................................................................... 47

4.4.1.1 Intel IGD Configuration............................................................................ 47

4.4.2 South Bridge Configuration............................................................................. 50

4.4.2.1 PCI Express Configuration....................................................................... 52

4.5 SECURITY................................................................................................................. 53

4.6 BOOT........................................................................................................................ 54

4.7 SAVE & EXIT............................................................................................................56

A REGULATORY COMPLIANCE.............................................................................. 58

B PRODUCT DISPOSAL.............................................................................................. 60

C BIOS OPTIONS.......................................................................................................... 62

D TERMINOLOGY ....................................................................................................... 65

E WATCHDOG TIMER................................................................................................. 69

F HAZARDOUS MATERIALS DISCLOSURE.......................................................... 72

Page v

iQ7-BT Qseven Module

List of Figures

Figure 1-1: iQ7-BT...........................................................................................................................2

Figure 1-2: On-board Components and Connectors ..................................................................4

Figure 1-3: iQ7-BT Dimensions (mm)...........................................................................................5

Figure 1-4: iQ7-BT Dimensions with Heatsink (mm)...................................................................5

Figure 1-5: Data Flow Diagram......................................................................................................6

Figure 3-1: Qseven Connector Location.................................................................................... 16

Figure 3-2: Connect the Qseven Connectors............................................................................21

Figure 3-3: Secure the Heatsink..................................................................................................22

Figure 3-4: Start Up Screen .........................................................................................................23

Figure 3-5: Drivers........................................................................................................................23

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iQ7-BT Qseven Module

List of Tables

Table 1-1: Model Variations...........................................................................................................3

Table 1-2: iQ7-BT Specifications...................................................................................................8

Table 2-1: Packing List.................................................................................................................11

Table 2-2: Optional Items.............................................................................................................12

Table 3-1: Qseven Connector Pin Definitions ...........................................................................20

Table 4-1: BIOS Navigation Keys................................................................................................28

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iQ7-BT Qseven Module

BIOS Menus

BIOS Menu 1: Main.......................................................................................................................29

BIOS Menu 2: Advanced..............................................................................................................30

BIOS Menu 3: ACPI Settings .......................................................................................................31

BIOS Menu 4: IT8528 Super IO Configuration...........................................................................32

BIOS Menu 5: Serial Port n Configuration Menu.......................................................................32

BIOS Menu 6: iWDD H/W Monitor ...............................................................................................34

BIOS Menu 7: Smar Fan Mode Configuration............................................................................35

BIOS Menu 8: RTC Wake Settings..............................................................................................36

BIOS Menu 9: Serial Port Console Redirection.........................................................................37

BIOS Menu 10: CPU Configuration.............................................................................................40

BIOS Menu 11: IDE Configuration...............................................................................................42

BIOS Menu 12: Trusted Computing............................................................................................43

BIOS Menu 13: USB Configuration.............................................................................................44

BIOS Menu 14: Security Configuration ......................................................................................45

BIOS Menu 15: Chipset................................................................................................................46

BIOS Menu 16: North Bridge.......................................................................................................47

BIOS Menu 17: Intel IGD Configuration......................................................................................47

BIOS Menu 18: South Bridge.......................................................................................................50

BIOS Menu 19: PCI Express Configuration ...............................................................................52

BIOS Menu 20: Security............................................................................................................... 53

BIOS Menu 21: Boot.....................................................................................................................54

BIOS Menu 22: Save & Exit..........................................................................................................56

iQ7-BT

Page viii

iQ7-BT Qseven Module

Chapter

1

1 Introduction

Page 1

1.1 Introduction

Figure 1-1: iQ7-BT

iQ7-BT Qseven Module

The iQ7-BT Qseven® module provides the main processing chips and is connected to a

compatible Qseven® baseboard. The iQ7-BT is preinstalled with 4

Atom or Celeron® processor. The Qseven® standard allows the Qseven® baseboard

to be designed, while leaving the choice of processor till the later stages of design. The

iQ7-BT provides a low power option with the full range of modern I/O options. The iQ7-BT

embedded module is designed for flexible integration by system developers into

customized platform devices.

1.2 Features

Some of the iQ7-BT Qseven module features are listed below:

 Complies with Qseven® Rev. 2.0 form factor

 Supports 22nm Intel® Atom or Celeron® processor

 2 GB/4 GB 1066/1333 MHz DDR3L soldered memory

 Optional 2 GB–64 GB soldered SSD

 Supports dual independent display via LVDS, DisplayPort or HDMI

 Supports USB 3.0, SATA 3Gb/s and GbE

th

generation Intel®

Page 2

 Supports wide operating temperature (-40ºC ~ 85ºC)

 RoHS compliant

iQ7-BT Qseven Module

1.3 Model Variations

There are several models of the iQ7-BT series. The model variations are listed in

Table 1-1.

Model On-board SoC Operating Temp.
Standard

iQ7-BT-E38251 Intel® Atom™ processor E3825

(1.33 GHz, dual-core, 1 MB cache, 6 W TDP)

iQ7-BT-E38251W2 Intel® Atom™ processor E3825

(1.33 GHz, dual-core, 1 MB cache, 6 W TDP)

iQ7-BT-E38451 Intel® Atom™ processor E3845

(1.91 GHz, quad-core, 2 MB cache, 10 W TDP)

iQ7-BT-E38451W2 Intel® Atom™ processor E3845

(1.91 GHz, quad-core, 2 MB cache, 10 W TDP)

By Request (MOQ: 100 pcs/lot)

iQ7-BT-E38151 -20ºC ~ 60ºC

iQ7-BT-E38151W2

iQ7-BT-E38261 -20ºC ~ 60ºC

iQ7-BT-E38261W2

iQ7-BT-E38271 -20ºC ~ 60ºC

Intel® Atom™ processor E3815

(1.46 GHz, single-core, 512 KB cache, 5 W TDP)

Intel® Atom™ processor E3826

(1.46 GHz, dual-core, 1 MB cache, 7 W TDP)

Intel® Atom™ processor E3827

-20ºC ~ 60ºC

-40°C–85°C

-20ºC ~ 60ºC

-40°C–85°C

-40°C–85°C

-40°C–85°C

iQ7-BT-E38271W2

iQ7-BT-J19001 Intel® Celeron® processor J1900

iQ7-BT-N28071 Intel® Celeron® processor N2807

iQ7-BT-N29301 Intel® Celeron® processor N2930

Table 1-1: Model Variations

(1.75 GHz, dual-core, 1 MB cache, 8 W TDP)

(2 GHz, quad-core, 2 MB cache, 10 W TDP)

(1.58 GHz, dual-core, 2 MB cache, 4.3 W TDP)

(1.83 GHz, quad-core, 2 MB cache, 7.5 W TDP)

-40°C–85°C

-20ºC ~ 60ºC

-20ºC ~ 60ºC

-20ºC ~ 60ºC

Page 3

1.4 Board Overview

The on-board components and connector of the iQ7-BT are shown in the figures below.

iQ7-BT Qseven Module

Figure 1-2: On-board Components and Connectors

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iQ7-BT Qseven Module

1.5 Dimensions

The main dimensions of the iQ7-BT are shown in the diagram below.

Figure 1-3: iQ7-BT Dimensions (mm)

Figure 1-4: iQ7-BT Dimensions with Heatsink (mm)

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1.6 Data Flow

Figure 1-5 shows the data flow between the system chipset, the CPU and other

components installed on the motherboard.

iQ7-BT Qseven Module

Page 6

Figure 1-5: Data Flow Diagram

iQ7-BT Qseven Module

1.7 Technical Specifications

The iQ7-BT technical specifications are listed below.

iQ7-BT
Form Factor

On-board SoC

Qseven® Rev. 2.0

 Standard

o Intel® Atom™ processor E3825

(1.33 GHz, dual-core, 1 MB cache, 6 W TDP)

o Intel® Atom™ processor E3845

(1.91 GHz, quad-core, 2 MB cache, 10 W TDP)

 By request (MOQ: 100 pcs/lot)

o Intel® Atom™ processor E3815

(1.46 GHz, single-core, 512 KB cache, 5 W TDP)

o Intel® Atom™ processor E3826

(1.46 GHz, dual-core, 1 MB cache, 7 W TDP)

o Intel® Atom™ processor E3827

(1.75 GHz, dual-core, 1 MB cache, 8 W TDP)

o Celeron® processor J1900

(2 GHz, quad-core, 2 MB cache, 10 W TDP)

o Intel® Celeron® processor N2930

Memory

Graphics Engine

Ethernet

BIOS

Embedded Controller

(1.83 GHz, quad-core, 2 MB cache, 7.5 W TDP)

o Intel® Celeron® processor N2807

(1.58 GHz, dual-core, 2 MB cache, 4.5 W TDP)

2 GB 1066/1333 MHz DDR3L soldered memory (up to 4 GB)

Intel® HD Graphics Gen 7 with four execution units

Supports DirectX 11.1, OpenGL 4.2 and OpenCL 1.2

Intel® I210 Ethernet Controller

UEFI BIOS

 $,[[%,26YHUVLRQLVIRU%D\7UDLO,PRGHO&38([[

 AMxx BIOS version is for Bay Trail M/D model (CPU: J1900/

N2930/N2807)

ITE IT8528E/FX

Page 7

iQ7-BT

iQ7-BT Qseven Module

Watchdog Timer

Storage

Display
(signal to baseboard)

Expansions
(signal to baseboard)

I/O Interfaces
(signal to baseboard)

Software programmable supports 1~255 sec. system reset

Two SATA 3Gb/s (signal to baseboard)

Optional 2 GB–64 GB soldered SSD (SATA port 2)

Supports dual independent display

One 18/24-bit dual-channel LVDS by CH7511B DP to LVDS

converter (up to 1920x1200@60 Hz)

One DDI (DP: up to 2560 x 1600; HDMI: up to 1920 x 1080)

Three PCIe x1

Six USB 2.0

One USB 3.0

One RS-232

HD Audio

8-bit SDIO 2.0

SMBus

2

I

C

LPC

SPI

3.3 V @ 0.1 A, 5 V @ 0.13 A, 12 V @ 1.35 A, 5 VSB @ 0.12 A

Power Consumption

Operating Temperature

Storage Temperature
Operating Humidity
Dimensions
Weight (GW/NW)
Table 1-2: iQ7-BT Specifications

(1.91 GHz Intel® Atom™ E3845 CPU with 2 GB 1333 MHz DDR3L

memory)

-20ºC ~ 60ºC

-40ºC ~ 85ºC (W2 models)

-30ºC ~ 70ºC

5% ~ 95% (non-condensing)

70 mm x 70 mm

300 g/150 g

Page 8

iQ7-BT Qseven Module

Chapter

2

2 Packing List

Page 9

2.1 Anti-static Precautions

WARNING!

Static electricity can destroy certain electronics. Make sure to follow the

ESD precautions to prevent damage to the product, and injury to the

user.

Make sure to adhere to the following guidelines:

 Wear an anti-static wristband: Wearing an anti-static wristband can prevent

electrostatic discharge.

 Self-grounding: Touch a grounded conductor every few minutes to discharge

any excess static buildup.

iQ7-BT Qseven Module

 Use an anti-static pad: When configuring any circuit board, place it on an

anti-static mat.

 Only handle the edges of the PCB: Don't touch the surface of the

motherboard. Hold the motherboard by the edges when handling.

2.2 Unpacking Precautions

When the iQ7-BT is unpacked, please do the following:

 Follow the antistatic guidelines above.

 Make sure the packing box is facing upwards when opening.

 Make sure all the packing list items are present.

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iQ7-BT Qseven Module

2.3 Packing List

NOTE:

If any of the components listed in the checklist below are missing, do

not proceed with the installation. Contact the IEI reseller or vendor the

iQ7-BT was purchased from or contact an IEI sales representative

directly by sending an email to [e-mail].

The iQ7-BT is shipped with the following components:

Quantity Item and Part Number Image

1 iQ7-BT Qseven Module

1 Heatsink

1 Utility CD

1 Quick Installation Guide

Table 2-1: Packing List

Page 11

2.4 Optional Items

The following are optional components which may be separately purchased:

Item and Part Number Image

Baseboard for Qseven modules

(P/N: iQ7-DB-MATX)

Table 2-2: Optional Items

iQ7-BT Qseven Module

Page 12

iQ7-BT Qseven Module

Chapter

3

3 Installation

Page 13

3.1 Anti-static Precautions

WARNING:

Failure to take ESD precautions during the installation of the iQ7-BT

may result in permanent damage to the iQ7-BT and severe injury to the

user.

Electrostatic discharge (ESD) can cause serious damage to electronic components,

including the iQ7-BT. Dry climates are especially susceptible to ESD. It is therefore critical

that whenever the iQ7-BT or any other electrical component is handled, the following

anti-static precautions are strictly adhered to.

 Wear an anti-static wristband: Wearing a simple anti-static wristband can

iQ7-BT Qseven Module

help to prevent ESD from damaging the board.

 Self-grounding: Before handling the board, touch any grounded conducting

material. During the time the board is handled, frequently touch any

conducting materials that are connected to the ground.

 Use an anti-static pad: When configuring the iQ7-BT, place it on an

antic-static pad. This reduces the possibility of ESD damaging the iQ7-BT.

 Only handle the edges of the PCB: When handling the PCB, hold the PCB

by the edges.

3.2 Installation Considerations

NOTE:

The following installation notices and installation considerations should

be read and understood before installation. All installation notices must

be strictly adhered to. Failing to adhere to these precautions may lead

Page 14

to severe damage and injury to the person performing the installation.

iQ7-BT Qseven Module

WARNING:

The installation instructions described in this manual should be

carefully followed in order to prevent damage to the components and

injury to the user.

Before and during the installation please DO the following:

 Read the user manual:

o The user manual provides a complete description of the iQ7-BT

installation instructions and configuration options.

 Wear an electrostatic discharge cuff (ESD):

o Electronic components are easily damaged by ESD. Wearing an ESD cuff

removes ESD from the body and helps prevent ESD damage.

 Place the iQ7-BT on an antistatic pad:

o When installing or configuring the motherboard, place it on an antistatic

pad. This helps to prevent potential ESD damage.

 Turn all power to the iQ7-BT off:

o When working with the iQ7-BT, make sure that it is disconnected from all

power supplies and that no electricity is being fed into the system.

Before and during the installation of the iQ7-BT DO NOT:

 Remove any of the stickers on the PCB board. These stickers are required for

warranty validation.

 Use the product before verifying all the cables and power connectors are

properly connected.

 Allow screws to come in contact with the PCB circuit, connector pins, or its

components.

Page 15

3.3 Qseven Connector Pinouts

CN Label: J_GF1

iQ7-BT Qseven Module

CN Type:
CN Location:
CN Pinouts:

The standard Qseven connector location and pinouts are shown below.

230-pin Qseven connector

See Figure 3-1
See Table 3-1

Page 16

Figure 3-1: Qseven Connector Location

Pin No. Description Pin No. Description

1 GND 2 GND
3 TRD1N3 4 TRD1N2
5 TRD1P3 6 TRD1P2
7 L1_100- 8 L1_1000­9 TRD1N1 10 TRD1N0
11 TRD1P1 12 TRD1P0
13 N/A 14 L1_LINK_ACT­15 N/A 16 PM_SLP_S4#
17 PCIE_WAKE# 18 PM_SLP_S3#
19 PM_SUS_STAT# 20 PANSWIN#

iQ7-BT Qseven Module

Pin No. Description Pin No. Description

21 SLEEP# 22 LID#
23 GND 24 GND
25 GND 26 PWGIN
27 BATLOW# 28 PM_SYSRST_R#
29 SATA_TXP0 30 SATA_TXP1
31 SATA_TXN0 32 SATA_TXN1
33 SATALED# 34 GND
35 SATA_RXP0 36 SATA_RXP1
37 SATA_RXN0 38 SATA_RXN1
39 GND 40 GND
41 BIOS_DISO# 42 SDIO_CLK
43 SDIO_CD_N 44 N/A
45 SDIO_CMD 46 N/A
47 SDIO_PWR_N 48 SDIO_D1
49 SDIO_D0 50 SDIO_D3
51 SDIO_D2 52 N/A
53 N/A 54 N/A
55 N/A 56 AT_ATX#DET
57 GND 58 GND
59 HDA_SYNC 60 SMB_CLK
61 HDA_RST# 62 SMB_DATA
63 HDA_BCLK 64 SMBALERT#
65 HDA_SDI 66 EC_CLK
67 HDA_SDO 68 EC_DATA
69 N/A 70 TP
71 N/A 72 EC_WDTRST#
73 GND 74 GND
75 USB3_TXD_N 76 USB3RXD_N
77 USB3_TXD_P 78 USB3RXD_P
79 GL852_OC2# 80 GL852_OC3#
81 USB3-_GL850 82 USB2-_GL850
83 USB3+_GL850 84 USB2+_GL850

Page 17

Pin No. Description Pin No. Description

85 GL852_OC1# 86 USB_OC#_0_1_R
87 USB1-_GL850 88 USB_PN2­89 USB1+_GL850 90 USB_PP2+
91 N/A 92 N/A
93 USB_PN1- 94 USB_PN0­95 USB_PP1+ 96 USB_PP0+
97 GND 98 GND
99 LVDS_A0+ 100 LVDS_B0+
101 LVDS_A0- 102 LVDS_B0­103 LVDS_A1+ 104 LVDS_B1+
105 LVDS_A1- 106 LVDS_B1­107 LVDS_A2+ 108 LVDS_B2+
109 LVDS_A2- 110 LVDS_B2-

iQ7-BT Qseven Module

111 LVDS_PPEN 112 LVDS_BLEN
113 LVDS_A3+ 114 LVDS_B3+
115 LVDS_A3- 116 LVDS_B3­117 GND 118 GND
119 LVDS_A_CLK+ 120 LVDS_B_CLK+
121 LVDS_A_CLK- 122 LVDS_B_CLK­123 LVDS_BLT_CTRL 124 N/A
125 N/A 126 N/A
127 N/A 128 N/A
129 N/A 130 N/A
131 TMDS_TXP3 132 EC_DCD
133 TMDS_TXN3 134 EC_DSR
135 GND 136 GND
137 TMDS_TXP1 138 DDI1_AUXP_R
139 TMDS_TXN1 140 DDI1_AUXN_R
141 GND 142 GND

Page 18

143 TMDS_TXP0 144 EC_RI
145 TMDS_TXN0 146 EC_DTR
147 GND 148 GND

iQ7-BT Qseven Module

Pin No. Description Pin No. Description

149 TMDS_TXP2 150 DDI1_CTRLDATA
151 TMDS_TXN2 152 DDI1_CTRLCLK
153 DDI1_HPD 154 LVDS_ DC
155 CLK_PCIIE0_P 156 PCIE_WAKE#
157 CLK_PCIIE0_N 158 BUF_PLT_RST#
159 GND 160 GND
161 N/A 162 N/A
163 N/A 164 N/A
165 GND 166 GND
167 PCIE_TXP2 168 PCIE_RXP2
169 PCIE_TXN2 170 PCIE_RXN2
171 SOC_TX 172 SOC_RTS
173 PCIE_TXP1 174 PCIE_RXP1
175 PCIE_TXN1 176 PCIE_RXN1
177 SOC_RX 178 SOC_CTS
179 PCIE_TXP0 180 PCIE_RXP0
181 PCIE_TXN0 182 PCIE_RXN0
183 GND 184 GND
185 LPC_AD0 186 LPC_AD1
187 LPC_AD2 188 LPC_AD2
189 LPC_CLK33M 190 LPC_FRAME#
191 INT_SERIRQ 192 TP
193 +VBAT 194 SOC_SPKR
195 FANIO1_EC 196 FANOUT1_EC
197 GND 198 GND
199 SPI_SI_R 200 SPI_CS#_R
201 SPI_SO_R 202 N/A
203 SPI_CLK_R 204 N/A
205 +5V_SBY 206 +V5_SBY
207 N/A 208 N/A
209 N/A 210 N/A
211 +V5S 212 +V5S

Page 19

Pin No. Description Pin No. Description

213 +V5S 214 +V5S
215 +V5S 216 +V5S
217 +V5S 218 +V5S
219 +V5S 220 +V5S
221 +V5S 222 +V5S
223 +V5S 224 +V5S
225 +V5S 226 +V5S
227 +V5S 228 +V5S
229 +V5S 230 +V5S

Table 3-1: Qseven Connector Pin Definitions

3.4 Mounting iQ7-BT to Baseboard

iQ7-BT Qseven Module

NOTE:

Baseboard can be designed by the end user, customized by IEI, or

purchased from IEI. For more information visit the IEI website

(www.ieiworld.com

) or contact an IEI sales representative.

WARNING:

Never run the Qseven module without the heatsink and a thermal pad.

The thermal pad acts as a thermal interface between the module and

the heatsink. The heatsink must be installed on the iQ7-BT to maintain

proper operating temperatures. Make sure to maintain the heatsink

temperature under 60C (or 85C for W2 models) in operation.

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