Editing NMB RT6856T

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{{infobox dkeyboard
| name         = NMB RT6855T
| pn           = RT6855T, RT6855TW, RT6855T''xx'', RT6855TW''xx''
| branding     = 
| fcc          = <!-- This is wrong: NMB's FCC grantee code is AQ6, making this an invalid code: AQ5-CYPRESSZ15 -->
| manufacturer = [[NMB]]
| switch       = [[Rubber dome]]
| layouts      = 101,102,104,105 keys (ANSI/ISO, w/wo Windows keys)
| interface    = [[AT]]
| weight       = 
| years        = 
| price        = 
}}

{{infobox dkeyboard
| name         = NMB RT6856T
| pn           = RT6856T, RT6856TW, RT6856T''xx'', RT6856TW''xx''
| branding     = 
| fcc          = AQ6-CYPRESSZ15
| manufacturer = [[NMB]]
| switch       = [[Rubber dome]]
| layouts      = 101,102,104,105 keys (ANSI/ISO, w/wo Windows keys)
| interface    = [[PS/2]]
| weight       = 
| years        = 
| price        = 
}}

The [[NMB]] '''RT6855T''' and '''RT6856T''' is a PC-compatible keyboard with [[rubber dome]] switches which is very common on the second-hand market. It has been sold under the original brand NMB and also several other companies' brands. The RT685'''5''' has [[AT keyboard interface|AT]] connector, and the RT685'''6''' has [[PS/2 interface|PS/2]].

The keyboard exists in many different national layouts, both ISO and ANSI. The keyboards with a '''W''' in the model number have windows keys. 1.25 wide modifiers and 6.25 wide space bar. In model numbers where there are two additional letters, those letters signify a regional layout. Otherwise the layout is US-ANSI.

==Construction==
The keyboard has a [[Keycap profile#Curved backplane|curved backplane]] with keys all the same profile. The backplane is made out of steel, which gives the keyboard some heft.

The keyboard has [[rubber dome]] switches, with square plungers integrated into the keycaps. The rubber sheet can be green or yellow.

There is a [[cable channel]] down the back of the keyboard, which is quite a distinguishing feature.

The case turns yellow with exposure to sunlight faster than the keys do.

==OEM==
The following have been observed and entered into the Wiki:

===Silicon Graphics===
[[File:NMBRT6856TSF.jpg|320px|thumb|right|A NMB RT6856TSF keyboard made for Silicon Graphics. Swedish/Finnish layout. The case has yellowed, but the keys almost not at all.]]
The case has a granite pattern. Keys are white and grey.

Sold with [[Silicon Graphics]] (SGI) computers with MIPS CPUs and the Irix operating system, such as the ''Octane'' and the ''O2''. The computers also came with a SGI-branded Logitech ''PilotMouse'' in the same granite pattern.

This keyboard is often confused with [[SGI Granite|a keyboard with Alps switches and granite pattern]] which it had succeeded.

Unfortunately, these rubberdomes will often be listed under the 'SGI No' 062-0002-001 instead of the Model No RT6856T, since the longer ID is printed first on the label.

SGI's Intel/Windows-based workstations and later MIPS-based workstations did not have this keyboard, but keyboards from [[Silitek]] in a near-black colour (bluish grey tint).

===Digital Equipment===
Two variations were made for [[Digital Equipment]]:

* White case with keys in white and grey. Part no LK471-A''x'' (where ''x'' signifies layout)
* White case and keys. Part no LK47W-A''x''

Both variants were sold with ''AlphaStation'' workstations and IBM-compatible PCs.

===Compaq===
White case and keys. Warning stickers.

===Micron===
White case. Keys are white and grey.

===Olivetti===
Model no. ANK 61-105.
Grey case, white and grey keys.

==Other keyboards==
* The RT6851T+ has a "big-ass" [[Enter key]].
* The RT685'''B'''TW has the space bar divided into Space and Backspace.<ref name="QC1"/>

==See also==
* [[SGI Granite]]

==References==
<references>
<ref name="QC1">Qwerters Clinic — [http://ex4.sakura.ne.jp/kb/main_compaq_rt685btw.htm Compaq RT685BTW] (Japanese)</ref>
</references>

[[Category:List of all keyboards]]
[[Category:NMB keyboards]]
[[Category:Keyboards with rubber domes]]
[[Category:DEC keyboards]]
[[Category:SGI keyboards]]