DTX Mother Board Pinout

Header Pinout

The DTX: MotherBoard format is 8" wide x 9.6" deep (203.20mm x 243.84mm).
While the Mini-DTX format is 8" wide x 6.7" deep (203.20mm x 170.18mm).
The DTX main-board is one of a number of Small Form Factor [SFF] mother-boards.
Both DTX motherboard formats are smaller than an ATX Mother Board and will fit into an ATX Chassis.
However, the chassis would need to accept the DTX mother board.
The DTX motherboard will accept one PCI connector, and one PCI Express connector.
Refer to the manufacturers page for Power Supplies to find compatible case supplies.
The Power Supply will indicate the standard which they comply to, in this case the notation ATX12V indicates the power supply compiles with these pinout tables.
Pin out tables for DTX connectors are listed below.
The DTX pinout is really a group of dual pin headers located on the Mother board.

Additional Mother Board form factors and processor types;
OEM MotherBoard Manufacturers page.

DTX Main Power Connector Pinout
Pin # Signal Function Pin # Signal Function
1 +3.3VDC 13 +3.3VDC
2 +3.3VDC 14 -12VDC
3 COM 15 COM
4 +5VDC 16 PS_ON#
5 COM 17 COM
6 +5VDC 18 COM
7 COM 19 COM
8 PWR_ON 20 NC
9 +5VSB 21 +5VDC
10 +12V1 22 +5VDC
11 +12V1 23 +5VDC
12 +3.3V 24 COM

The 24-pin connector is a Molex 44206-0007 style connector.

Molex Power Connector image
DTX +12v Power Connector PinOut
Pin # Signal Function Pin # Signal Function
1 Ground 2 Ground
3 +12V 4 +12VDC

The 4-pin connector is a Molex 39-29-9042, 2x2 style connector.

DTX Standard: DTX Mechanical Interface Specification; Revision 1.00, Feb 2007

Memory Module formats and manufacturers are listed on the Memory Module Manufacturers page.

List of Computers Manufacturers

A few computer manufacturers may use non-standard or proprietary components in their systems to reduce costs.
The pinout for the power headers listed on this page comply with the ATX specification. However some companies may use pinouts that differ from the pin out tables above.
First try to determine the pin out of the headers listed above from the manual that shipped with the computer, and use these tables only after checking the manufacturing sources of data.

PC motherboard

Distributor rolodex Electronic Components Electronic Equipment EDA CDROM Software Engineering Standards, BOB card Cabled Computer Bus Electronic Engineering Design Table Conversion DB9-to-DB25.
DistributorsComponents Equipment Software Standards Buses Design Reference

Modified 6/13/15
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