The Technobox 4320 Basic CMC Extender PMC, PrPMC, or PMC-X is a
development/diagnostics tool that permits the extension of a module beyond its chassis or carrier. By extending the board, one has
access to bus and I/O signals for probing, measuring, etc. Four break-out headers with 0.1-inch grid pins on the body of the board
(JP1, JP2, JP3, and JP4) pick off the bus signals and rear I/O signals on JN1, JN2, JN3, JN4 mezzanine connectors. Signal names
are clearly labeled on the silk screen legend for PCI application and ease of use. The 4320 supports both 3.3 volt and 5.0 volt signaling.