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H8DMT/H8DMT-IBX/H8DMT-F/H8DMT-IBXF User’s Manual
2-10
NMI Button
The non-maskable interrupt button header is located on pins 19 and 20 of JF1. Refer to
the table below for pin definitions.
Universal Serial Bus Ports
Two Universal Serial Bus ports (USB 2.0) are located beside the LAN1/2 ports. Two
additional ports (USB4/5) are included on the motherboard near the SIMSO slot. See
the table below for pin definitions.
USB Headers
Two USB 2.0 headers (USB2/3) are also included on the motherboard. These may be
connected to provide front side access. A USB cable (not included) is needed for the
connection. See the table below for pin definitions.
Pin# Definition
19 Control
20 Ground
USB0 USB1
Pin# Definition Pin# Definition
1+5V 1+5V
2 PO- 2 PO-
3PO+ 3PO+
4 Ground 4 Ground
USB2 USB3/4
Pin# Definition Pin# Definition
1+5V 1+5V
2 PO- 2 PO-
3PO+ 3PO+
4 Ground 4 Ground
5 Key 5 No connection