The MESA 4P20 is an 11W POE power supply for PC/104 and PC/104-PLUS systems from MESA Electronics (Richmond, CA). The 4P20 allows a remote PC/104 system to get power from a single CAT5 cable up to 100 meters long. The 4P20 supplies 5V at up to 2A, +12V at up to 200 mA, and -12 at up to 100 mA via the bus connectors to the PC/104 stack.
The POE connection is a feedthrough tap so Ethernet connection can be routed to a local Ethernet endpoint, and auxiliary power inputs are provided to allow external 18 to 60 VDC sources to power the 4P20 if POE is not available.
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