RUMBA32 V1.1 User Manual – Rev A
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USB
I
NTERFACE
USB connection to RUMBA32 is via a standard Micro-USB socket. This can be used to provide 5V power
to the board, to communicate over USB serial, and to upload firmware to the board.
There is a 200mA PTC resettable fuse in line with the power from the USB connector. This prevents
RUMBA32 from drawing excessive current and potentially damaging the host device if there is a short
circuit or other wiring problem.
Figure 8: USB Connector
The USB pin header provides additional access to the USB signals. It matches the internal USB pinout
used by ATX motherboards and can be used to connect external USB connectors – such as a panel
mount connector, as shown in Figure 9.
Figure 9: Example USB Panel-Mount Connector
