Pinouts >  ATX, WTX and other standard and proprietary power supply (PSU) cables connectors
standard interface between BTX motherboard and compatible power supply
1+3.3 VDC 
2+3.3 VDC 
4+5 VDC 
6+5 VDC 
8PWR_OKPower good - indicate that VDC voltages are in range.
9+5 VSBStandby voltage
10+12 VDC 
11+12 VDC 
12+3.3 VDC 
13+3.3 VDC 
14-12 VDC 
16PS_ON#Active low. TTL compatible (0.1-0.8V low; 2.0 high?). When low - DC outputs are enabled. When high - power supply should not deliver DC current.
21+5 VDC 
22+5 VDC 
23+5 VDC 
24 pin MiniFit Jr 5557-24 female (MOLEX 39-01-2240) connector layout
24 pin MiniFit Jr 5557-24 female (MOLEX 39-01-2240) connector
at the power supply cable
According to 4 reports in our database (4 positive and 0 negative) this pinout should be correct.

Is this pinout
BTX motherboard power supply visual pinout:
BTX motherboard power supply diagram
click to enlarge
Source(s) of this and additional information: BTX interface specification at the
This page contain parts under Copyright © 2000-2019 by team.
No portion of this webpage may be reproduced in any form without providing visible HTML link to . Webmaster permission required in any other cases.
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.