Vecow MTC-4021 User Manual page 29

2.3.7 J4 : Internal USB
The MTC-4021 main board provide one expansion USB port using plug-and-
play for Dongle Key or LCD touch Panel. The USB interface supports 480 Mbps
transfer rate which comply with high speed USB specification Rev. 2.0.
The USB interface is accessed through one 4-pin JST 2.0mm connector. You
will need an adapter cable if you use a standard USB connector. The adapter
cable has a 4-pin connector on one end and a USB connector on the other.
The pin assignments of J4 are listed in the following table:
Connector
J4
©Vecow MTC-4021 User Manual
Pin No. Description
1 USB_VCC
2 USBD-
Pin No. Description
3
4
GETTING TO KNOW YOUR MTC-4021
J4
USBD+
GND
22