The Flat Display Mounting Interface (FDMI), also known as VESA Mounting Interface Standard (MIS) or colloquially as VESA mount, is a family of standards defined by the Video Electronics Standards Association for mounting flat panel monitors, televisions, and other displays to stands or wall mounts. It is implemented on most modern flat-panel monitors and televisions. As well as being used for mounting monitors, the standards can be used to attach a small PC to the monitor mount. The first standard in this family was introduced in 1997 and was originally called Flat Panel Monitor Physical Mounting Interface (FPMPMI), it corresponds to part D of the current standard. Variants Most sizes of VESA mount have four screw-holes arranged in a square on the mount, with matching tapped holes on the device. The horizontal and vertical distance between the screw centres respectively labelled as 'A', and 'B'. The original layout was a square of 100mm. A was defined for smaller displays. Later, variants were added for screens with as small as a diagonal. The FDMI was extended in 2006 with additional screw patterns that are more appropriate for larger TV screens. Thus the standard now specifies seven sizes, each with more than one variant. These are referenced as parts B to F of the standard or with official abbreviations, usually prefixed by the word "VESA". Unofficially, the variants are sometimes referenced as just "VESA" followed by the pattern size in mm, which is slightly ambiguous for the names "VESA 50" (four possibilities), "VESA 75" (two possibilities) and "VESA 200" (three possibilities). However, if "VESA 100" is accepted as meaning the original variant ("VESA MIS-D, 100"), then all but "VESA MIS-E" and "VESA MIS-F, 200" have at least one unique dimension that can be used in this way, as can be seen from the tables below. Notes If a screen is heavier or larger than specified in table 1, it should use a larger variant from the table, for instance, a 30-in LCD TV weighing more than would need to use a part F mount. The weight limits were chosen as round numbers in kg or lb for different sizes. The screw lengths for parts C, D and E become whole numbers when adding a 2.6 mm thick bracket (which is how the standard describes them). The screw lengths for part F are minimum / maximum / hole maximum, as in: M6 screws