SFF-SIG (Small Form Factor Special Interest Group) is a Standards family primarily focused on the development of modular embedded computers and controllers.
Many SFF-SIG specifications utilize proven interfaces such as PCI Express® and USB when defining single-board systems and COM (computer-on-module) form factors.
SUMIT is an electromechanical connectorization specification that enables all common serial and legacy chipset expansion busses for next generation products. It is a stackable, I/O-centric, serial expansion approach that is independent of any particular board form factor. It supports PCIe, USB, LPC, SMBus, and ExpressCard signals on a single high-speed connector.
Samtec's Q2™ connectors are compliant to the SUMIT standard.
Samtec also offers precision machined standoffs to limit the impact of tolerance stack up issues in embedded applications.