Intel ATX

4 Design Guide
4 Mechanical ..................................................................................................... 30
4.1 Labeling and Marking - Recommended .................................................... 30
4.2 Connectors - Required .......................................................................... 30
4.2.1 AC Connector ......................................................................... 30
4.2.2 DC Connectors ........................................................................ 30
4.3 Airflow and Fans - Recommended ........................................................... 35
4.3.1 Fan Location and Direction ........................................................ 35
4.3.2 Fan Size and Speed ................................................................. 36
4.3.3 Venting .................................................................................. 36
5 Acoustics ....................................................................................................... 37
5.1 Acoustics – Recommended .................................................................... 37
6 Environmental ................................................................................................ 38
6.1 Temperature – Recommended ................................................................ 38
6.2 Thermal Shock (Shipping) – Recommended ............................................. 38
6.3 Humidity – Recommended ..................................................................... 38
6.4 Altitude – Recommended ....................................................................... 38
6.5 Mechanical Shock – Recommended ......................................................... 39
6.6 Random Vibration – Recommended ......................................................... 39
7 Electromagnetic Compatibility ........................................................................... 40
7.1 Emissions – Required ............................................................................ 40
7.2 Immunity - Required ............................................................................ 40
7.3 Input Line Current Harmonic Content - Optional ....................................... 40
7.4 Magnetic Leakage Field - Required .......................................................... 41
7.5 Voltage Fluctuations and Flicker – Required .............................................. 41
8 Safety ........................................................................................................... 42
8.1 North America – Required ...................................................................... 42
8.2 International – Required ........................................................................ 43
8.3 Proscribed Materials - Required .............................................................. 43
8.4 Catastrophic Failure Protection - Recommended ........................................ 43
9 Reliability ...................................................................................................... 44
9.1 Reliability - Recommended .................................................................... 44
9.2 Reliability – PS_ON# Toggle for S0ix Mode - Required ............................... 44
10 CFX12V Specific Guidelines 1.63 ....................................................................... 45
10.1 Physical Dimensions – Required .............................................................. 45
11 LFX12V Specific Guidelines 1.43 ........................................................................ 46
11.1 Physical Dimensions - Required .............................................................. 46
12 ATX12V Specific Guidelines 2.53 ....................................................................... 49
13 SFX12V Specific Guidelines 3.43 ....................................................................... 51
13.1 Lower Profile Package - Physical Dimensions - Required ............................. 51
13.2 Fan Requirements - Required ................................................................. 51
13.3 Top Fan Mount Package - Physical Dimensions -Required ........................... 53
13.4 Fan Requirements - Required ................................................................. 53
13.5 Reduced Depth Top Mount Fan - Physical ................................................. 54
13.6 Fan Requirements - Required ................................................................. 54