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Thin Mini-ITX Based PC System Design Guide Thin Mini-ITX Based PC System Design Guide All In One, Tiny PC December 2012 Revision 1.2 INFORMATION IN THIS DOCUMENT PROVIDED IN CONNECTION WITH INTEL® PRODUCTS IS PROVIDED "AS IS" AND NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL® PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to its specifications, release dates and product descriptions at any time, without notice. The Thin Mini-ITX Based PC System Design Guide may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. All dates and plans specified are target dates, are provided for planning purposes only and are subject to change. Intel and the Intel logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. *Other names and brands may be claimed as the property of others. Copyright © 2012, Intel Corporation. 2 Thin Mini-ITX Based PC System Design Guide Contents 1 Introduction ...................................................................................................... 8 1.1 Purpose / Scope ..................................................................................... 8 1.2 Overview ............................................................................................... 8 1.2.1 All In One PCs ........................................................................... 9 1.2.2 Tiny PCs .................................................................................. 10 1.3 Terminology .......................................................................................... 11 1.4 Reference Documents ............................................................................. 12 2 Thin Mini-ITX Internal Electrical Interfaces ........................................................... 13 2.1 Common Connector List .......................................................................... 13 2.2 Flat Panel Display .................................................................................. 14 2.2.1 LVDS ...................................................................................... 14 2.2.2 eDP (VESA Embedded Display Port™) ......................................... 17 2.2.3 Flat Panel Display Brightness ..................................................... 19 2.2.4 On Screen Display (OSD) ........................................................... 20 2.3 Audio ................................................................................................... 21 2.3.1 Front Panel Audio ..................................................................... 21 2.3.2 Internal Stereo Speakers ........................................................... 22 2.3.3 Digital Microphone .................................................................... 23 2.4 SATA .................................................................................................... 24 2.5 Internal USB ......................................................................................... 24 2.5.1 Front Panel Dual USB 2.0 Header ............................................... 24 2.5.2 Internal Dual USB 2.0 Header .................................................... 25 2.5.3 Internal Single USB 2.0 Header .................................................. 26 2.5.4 Internal USB 3.0 Header ............................................................ 26 2.6 Front Panel (Buttons, LEDs) .................................................................... 28 2.7 Internal Power Input .............................................................................. 29 2.8 Fans ..................................................................................................... 31 2.8.1 CPU Fan .................................................................................. 31 2.8.2 System Fan ............................................................................. 31 2.9 Consumer Infrared Receiver .................................................................... 32 2.10 Wireless Bluetooth ................................................................................. 32 2.11 Monitor Switch ...................................................................................... 32 3 Power Supply ................................................................................................... 34 3.1 External AC Adapter ............................................................................... 34 3.2 External Power Connector for Socketed CPU Based Systems........................ 34 4 Thermals & Acoustics ........................................................................................ 36 4.1 General Thermal-Acoustics Considerations ................................................ 36 4.1.1 Blowers ................................................................................... 37 4.1.2 Fan Speed Control and CPU Throttling ......................................... 37 4.1.3 Vent Free Area Ratio ................................................................. 40 4.1.4 Dust Considerations .................................................................. 40 4.2 Environmental and Skin Temperature Limit Recommendations .................... 40 4.3 Motherboard Component Cooling ............................................................. 40 4.3.1 Memory Cooling ....................................................................... 40 Thin Mini-ITX Based PC System Design Guide 3 4.3.2 Platform Controller Hub (PCH) Cooling ........................................ 41 4.3.3 Voltage Regulator Cooling .......................................................... 41 4.4 Acoustics .............................................................................................. 42 5 Mechanical ....................................................................................................... 44 5.1 CPU Mechanicals .................................................................................... 44 5.2 Internal Motherboard Header Locations .................................................... 45 5.3 System Cables and Connectors ................................................................ 46 5.3.1 System Cable Kitting ................................................................. 46 5.4 CPU Thermal Solution and System Fan Mechanical Interface ....................... 46 5.5 Thin Mini-ITX I/O Shield ......................................................................... 50 5.6 Industrial Design, System Layout, and Usability Considerations ................... 51 5.6.1 AIO Specific System Mechanicals ................................................ 52 6 Low Profile Reference Heat Pipe Thermal Solution ................................................. 53 6.1 General Volumetrics / Requirements ........................................................ 53 6.2 Reference Design CPU Thermal Solution ................................................... 53 7 Reference System Layouts ................................................................................. 55 7.1 Thin Mini ITX Based System Design .......................................................... 55 7.1.1 General System Design Considerations ........................................ 55 7.2 Reference Core Components Layouts ........................................................ 56 7.3 Thermal Test Method .............................................................................. 65 7.3.1 Components Used for Testing ..................................................... 65 7.3.2 Stress Software ........................................................................ 66 7.3.3 Temperature Measurement Locations .......................................... 67 Figures Figure 1-1. Thin Mini-ITX Applications ................................................................. 9 Figure 1-2. Mini-ITX (left) vs Thin Mini-ITX (right) ............................................... 11 Figure 2-1. 40-pin LVDS Header ........................................................................ 15 Figure 2-2. 40-pin eDP MB Header ..................................................................... 17 Figure 2-3. PC & Software Brightness Control: .................................................... 19 Figure 2-4. FPD Brightness Header .................................................................... 19 Figure 2-5. Front Panel Audio Header ................................................................. 21 Figure 2-6. Internal Stereo Speakers Header ....................................................... 22 Figure 2-7. DMIC MB Header ............................................................................. 23 Figure 2-8. 2x5 USB 2.0 Header (Keyed at Pin 9) ................................................ 24 Figure 2-9. 2x5 USB 2.0 Header (Keyed at Pins 9 and 10) .................................... 25 Figure 2-10. 1x5 USB 2.0 Header ...................................................................... 26
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