ATX Power Supply

20 PIN MOLEX 39-29-9202 (at the motherboard)
20 PIN MOLEX 39-01-2200 (at the cable)

20 PIN MOLEX 39-29-9202 at the motherboard
20 PIN MOLEX 39-01-2200 at the cable

Pin Name   Color Description
1 3.3V   Orange +3.3 VDC
2 3.3V   Orange +3.3 VDC
3 COM   Black Ground
4 5V   Red +5 VDC
5 COM   Black Ground
6 5V   Red +5 VDC
7 COM   Black Ground
8 PWR_OK   Gray Power Ok (+5V & +3.3V is ok)
9 5VSB   Purple +5 VDC Standby Voltage (max 10mA)
10 12V   Yellow +12 VDC
11 3.3V   Orange +3.3 VDC
12 -12V   Blue -12 VDC
13 COM   Black Ground
14 /PS_ON   Green Power Supply On (active low)
15 COM   Black Ground
16 COM   Black Ground
17 COM   Black Ground
18 -5V   White -5 VDC
19 5V   Red +5 VDC
20 5V   Red +5 VDC

18 AWG is recommended for all wires except pin 11, which should be 22 AWG
For 300W configurations 16 AWG is recommended.


ATX Spanningen

 

Nominal Voltage

Wire Color

Minimum Voltage

Maximum Voltage

+5 V

Red

4.75 V

5.25 V

-5 V

White

-4.75 V

-5.25 V

+12 V

Yellow

11.4 V

12.6 V

-12 V

Blue

-11.4 V

-12.6 V

+3.3 V

Orange

3.135 V

3.465 V

Het typische verbruik van diverse componenten:

High-wattage AGP card 20 - 50W +3.3V
Average PCI card 5W +5V
Cached PCI SCSI controller card 20-25W +3.3V and +5V
Floppy drive 5W +5V
10/100 NIC 4W +3.3V
Typical Atapi CD-ROM 10 - 25W +5V and +12V
Typical Atapi DVD-ROM 10 - 25W +5V and +12V
Typical SCSI CD-R/RW 20W +5V and +12V
SCSI CD-ROM 12W +5V and +12V
RAM 8W per 128MB +3.3V
Ultra2 SCSI PCI card 5W +3.3V and +5V
5400rpm IDE hard drive 5 - 10W +5V and +12V
7200rpm IDE hard drive 5 - 15W +5V and +12V
7200rpm Ultra2 SCSI hard drive 24W +5V and +12V
10,000rpm SCSI drive 10 - 40W +5V and +12V
Motherboard (without CPU or RAM) 20 - 30W +3.3V and +5V
Typical Pentium II 30W +5V
1GHz and up Pentium III 34W +5V
Typical Pentium 4 65W +12V
Typical AMD Athlon 70W +12V