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TFX12V Power Supply Design Guide
Thin Form Factor with 12-V Connector
Version 2.0
3.7.1 TFX12V Main Power Connector
Connector: MOLEX
*
39-01-2240 or equivalent
(Mating motherboard connector is Molex 44206-0007 or equivalent)
18 AWG is suggested for all wires except for the +3.3 V supply and sense return wires combined into pin 11
(22 AWG).
Pin Signal Color Pin Signal Color
1 +3.3 VDC
Orange
13
[13]
+3.3 VDC
[+3.3 V default
sense]
Orange
[Brown]
2 +3.3 VDC Orange 14 -12 VDC Blue
3 COM Black 15 COM Black
4 +5 VDC Red 16 PS_ON# Green
5 COM Black 17 COM Black
6 +5 VDC Red 18 COM Black
7 COM Black 19 COM Black
8 PWR_OK Gray 20 Reserved NC
9 +5 VSB Purple 21 +5 VDC Red
10 +12 V1DC Yellow 22 +5 VDC Red
11 +12 V1DC Yellow 23 +5 VDC Red
12 +3.3 VDC Orange 24 COM Black
3.7.2 Peripheral Connector(s)
Connector: AMP
*
1-480424-0 or MOLEX
*
8981-04P or equivalent.
Contacts: AMP 61314-1 or equivalent.
Pin Signal 18 AWG Wire
1 +12 V1DC Yellow
2 COM Black
3 COM Black
4 +5 VDC Red
3.7.3 Floppy Drive Connector
Connector: AMP
*
171822-4 or equivalent
Pin Signal 20 AWG Wire
1 +5 VDC Red
2 COM Black
3 COM Black
4 +12 V1DC Yellow