==Custom FACET-Card design resources==
===WIDE Mechanical constraints===There are two form-factors of FACET-Cards* Narrow occupies the M.2 E-Key slot (leaving the SATA slot native)* Wide FACET-Card occupies both M.2 slot (usually requiring SATA slot on the FACET itself)====Narrow FACET-Card mechanical constraints====* [https://fit-iot.com/files/mechanical/FACETS/narrow-facet-card-envelope.pdf Narrow FACET-Card envelope (PDF)]====Wide FACET-Card mechanical constraints====
* [https://fit-iot.com/files/mechanical/FACETS/FACET-wide-type-envelope.x_t wide FACET-Card envelope (x_t)]
* [https://fit-iot.com/files/mechanical/FACETS/FITLET2-FACET-wide-type-envelope.DXF wide FACET-Card envelope (DXF)]
* [https://fit-iot.com/files/mechanical/FACETS/FITLET2-FACET-wide-type-envelope.PDF wide FACET-Card envelope (PDF)]
===Narrow FACET-Card mechanical constraints===
* [https://fit-iot.com/files/mechanical/FACETS/narrow-facet-card-envelope.pdf Narrow FACET-Card envelope (PDF)]
===FACET-Card pinout===