Flat Display Mounting Interface

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, TVs, and other displays to stands or wall mounts.[1] It is implemented on most modern flat-panel monitors and TVs.

As well as being used for mounting monitors, the standards can be used to attach a small PC to the mount or monitor.

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 centers was originally 100 mm. A 75 mm × 75 mm layout was defined for smaller displays. Later, variants were added for screens with as small as a 4 inch diagonal.

The FDMI was extended in 2006 with additional screw patterns that are more appropriate for larger TV screens. Thus the standard now specifies 7 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" (4 possibilities), "VESA 75" (2 possibilities) and "VESA 200" (3 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.

A "VESA 200" ("VESA MIS-E, C" or "VESA MIS-F, 200, 6") mount holding a 30-in LCD television.
Table 1: Parts of VESA MIS[2]
Part Display Pattern sizes Screw size
Diagonal,
min.
Weight,
max.
Thread Length
excl. bracket
MIS- (in) (mm) (kg) (lb) (mm) (mm)
B 4 102 2 4.4 20×50 M4 4.0
C 8 203 4.5 10 35×75 M4 5.4
D 75mm 12 305 8 17.5 75×75, 50×75 M4 7.4
D 12 305 14 30.8 100×100, 50×100 M4 7.4
E 23 584 22.7 50 100×200, 50×200 M4 7.4
F M6 31 785 50 110 200×200 and up M6 9 / 10 / 12
F M8 31 785 113.6 250 200×200 and up M8 12 / 15 / 16

Notes:

Details of variant B to E

Hole placement etc. for "VESA MIS-E" mounts, showing many of the details described in the article
Table 2: Part B to E center mounts[2]
Variant Hole pattern Clearance
depth,
max.
Steel
thickness,
typical
Part Label Size Count
Height Width Height Width
(mm) (mm) (mm) (mm)
B MIS-B, C 20 50 2 2 6 2
C MIS-C, C 35 75 2 2 8 2.6
D 75mm MIS-D, 75, C 75 75 2 2 10 2.6
D MIS-D, 100, C 100 100 2 2 10 2.6
E MIS-E, C 100 200 2 3 10 2.6

Notes for center mounts:

Table 3: Part B to E edge mounts[2]
Variant Hole pattern Clearance
depth,
max.
Steel
thickness,
typical
Edge
distance
Part Label Size Count
Height Width Height Width
(mm) (mm) (mm) (mm) (mm)
B MIS-B, x 20 50 2 2 6 2 10
C MIS-C, x 35 75 2 2 8 2.6 12.5
D 75mm MIS-D, 75, x 50 75 2 2 10 2.6 10
D MIS-D, 100, x 50 100 2 2 10 2.6 10
E MIS-E, x 50 200 2 3 10 2.6 10

Notes for the edge mounts:

Common notes for variants B to E

More details can be found by purchasing a copy of the standard itself,[2] including rules to ensure cables don't prevent using the mounts.

Details of variant F

Table 2: Part F center mounts[2]
Variant Hole pattern
Part Label Size Count
Height Width Height Width
(mm) (mm)
F MIS-F, 200, yn, 6/8 200 200 2 2
F MIS-F, 300, yn, 6/8 300 300 2 3
F MIS-F, 400, yn, 6/8 400 400 2 4
F MIS-F, 500, yn, 6/8 500 500 2 5
F MIS-F, 600, yn, 6/8 600 600 2 6
F MIS-F, 700, yn, 6/8 700 700 2 7
F MIS-F, 800, yn, 6/8 800 800 2 8
F MIS-F, 900, yn, 6/8 900 900 2 9
F MIS-F, 1000, yn, 6/8 1000 1000 2 10

Common notes for variant F

More details can be found by purchasing a copy of the standard itself,[2] including rules to ensure cables don't prevent using the mounts.

Common deviations from variant F

In practice, many screens that almost comply with part F of the standard deviate in various minor ways, and most brands of compliant brackets are designed to handle these deviations with little or no trouble for the end user:

Compliance

Manufacturers of FDMI compliant devices can license the use of a hexagonal "VESA mounting compliant" logo.[7]

Many compliant or almost compliant devices do not display the logo, as is reflected by the absence of most key vendors from VESA's own public list of licensed manufacturers.[7] Of the members of the standard committee (Ergotron, Peerless Industries, HP, Samsung, Sanus, ViewSonic and Vogel's), only Ergotron is on the list.

As mentioned above under Variant F, there are many almost compliant screens on the market, and some of those use the "VESA" name loosely to refer to their similar mounting patterns. Fortunately many brackets (mounts) from reputable vendors such as Ergotron and Vogel's are designed to accommodate the deviating models, thus limiting the effect on end users.

References

  1. "FDMI Overview" (PDF).
  2. 1 2 3 4 5 6 7 8 9 VESA Flat Display Mounting Interface Standard Version 1, Rev. 1, January 16, 2006
  3. 1 2 Unsourced entry in the October 18, 2006 version of this page
  4. "Samsung f8500 specs".
  5. Unsourced entry in the December 2006 version of this page
  6. 1 2 Seen on a real TV device, better reference needed
  7. 1 2 VESA Mounting Compliance Logo, retrieved 2012-12-25

External links

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