ModBlox7 defines the basic specification for a modular box PC consisting of various functional modules, such as the CPU, power supply, and I/Os. This new, vendor-neutral standard enables users to implement a wide range of device combinations in a modular design using interoperable functional units. The PICMG® also aimed to reduce costs and promote sustainability. The new PICMG® specification covers the mechanical design, the modular functional units, and the electrical connections via connectors with a predefined pinout.

A box PC consists of a chassis, one or two power supply units, and one or two CPUs, each with up to four PCI Express and up to eight USB-based I/Os. Each module, in turn, can comprise up to three stacked circuit boards, depending on the unit’s complexity. The dimensions of the box PC are specified in terms of height and depth. The front width, however, varies depending on the number of units. These, in turn, can each consist of one or more so-called 1.4-inch (3.56 cm) slots. Twelve slots can thus be arranged in a row up to a maximum width of 16.8 inches (42.67 cm). In a standard for
modular device configuration, special attention is naturally paid to the electrical and mechanical connection of the individual modules via connectors.

The ModBlox7 standard is developed by the non-profit consortium of companies and organizations PICMG (PCI Industrial Computer Manufacturers Group), founded in 1994. 

ComExpress is a specification for Computer-on-Modules (COM). COM Express specifies the module dimensions, placement, mounting holes, and pin assignments of the connectors.
Our COM Express connectors are designed for applications including industrial control, transportation technology, data acquisition, medical technology,

point-of-sale interfaces, human-machine interfaces, digital signage, multimedia components, and communications hardware. Our COM Express connectors are available for demanding applications in the aerospace, rail, automotive, remote data acquisition, military, data centers, and video surveillance.

The ComExpress standard is developed by the non-profit consortium of companies and organizations PICMG (PCI Industrial Computer Manufacturers Group), founded in 1994.

The CompactPCI specifications offer a cost-effective, modular, and scalable approach for systems in industry, commerce, aerospace, the military, instrumentation, data acquisition, communications, telephony, machine control, and human-machine interfaces.

The CompactPCI standard is used in telecommunications infrastructure, network security platforms, sensitive enterprise data centers for banks, insurance companies, industrial enterprises, large-scale physical experiments, and increasingly in critical military applications.

The CompactPCI standard is developed by the non-profit consortium of companies and organizations known as PICMG (PCI Industrial Computer Manufacturers Group), founded in 1994.

VPX (also known as the VITA 46 standard) utilizes the latest switching technologies in 3U and 6U blades. VPX is particularly common among defense contractors. VPX supports PCI Mezzanine Cards (PMC) and XMC mezzanines (PMC with high-speed serial connectivity), ensuring the highest possible compatibility with VMEbus.

The VPX (VITA 46) standard is developed by the VPX Community, which is part of VITA, founded in 1982 as the VMEbus Manufacturers Group.

The VMEbus computer architecture supports a wide range of applications, including industrial control, military, telecommunications, office automation, and instrumentation systems. The VMEbus specification has been updated through revisions B, C, C.1, IEC 821, IEEE 1014-1987, and ANSI/VITA 1-1994. VMEbus is primarily used in the fields of industrial control, military, aerospace, avionics, transportation, telecommunications, simulation, medicine, high-energy physics, and technical office equipment.

The VMEbus computer architecture was developed by VITA. VITA was founded in 1982 as the VMEbus Manufacturers Group.

The PC/104 standard is based on the ISA bus as defined by IEEE P996, which was used in early PCs. It is used in slower systems that require modularity and ruggedness. The original stack concept has since been supplemented by newer, faster, and more rugged versions.

The PC/104 standard was developed by the PC/104 Consortium, which was founded in February 1992 by 12 companies.