Editing Copam K-457

{{stub}}

{{infobox dkeyboard
| image name   = Copam K-457 -- top.jpg
| fcc          = 
| branding     = [[Copam]]
| manufacturer = [[Copam]]
| switch       = [[Cherry MX Pale Blue]]?
| layouts      = Incorrect ISO
| interface    = [[AT keyboard interface|AT]]
| weight       = 1650 g
| years        = 
| price        = 
| dimensions   = 480 × 204 × 36 mm
}}

'''K-457''' is a keyboard from Copam.

In the example below, the controller is dated to 1991, as is the PCB (both 91 in the Gregorian calendar and 80 in the Minguo calendar). The switches are uncertain — they have the same apparent spring characteristics as found in [[Cherry MX Pale Blue]], as well as the same yellow discolouration of the slider ramps; however, the shade of blue seems to be perfectly in keeping for regular [[Cherry MX Blue]], while Pale Blue is a different hue. alps.tw describes the K-457 switches as being "藍" ("blue") and regular Cherry MX Blue as being "青" ("green"). The actuation force of the switches is 52–56 g according to alps.tw, in line with Cherry MX Blue.

==Gallery==
<gallery widths=250 heights=187>
File:Copam K-457 -- top.jpg                      | Top
File:Copam K-457 -- side, angled.jpg             | Side, angled
File:Copam K-457 -- bottom.jpg                   | Bottom; the AT plug has apparently been replaced with a PS/2 plug
File:Copam K-457 -- keycaps removed.jpg          | Keycaps removed
File:Copam K-457 -- cover removed.jpg            | Top cover removed
File:Copam K-457 -- internals.jpg                | Internals
File:Copam K-457 -- some keycaps removed.jpg     | Some keycaps removed
File:Copam K-457 -- keycap and switch detail.jpg | Keycap and switch detail
File:Copam K-457 -- switch comparison, top.jpg   | Switch comparison, with "regular" Cherry MX Blue on the right
File:Copam K-457 -- switch comparison.jpg        | Switch comparison, with "regular" Cherry MX Blue below
File:Copam K-457 -- controller IC and serial.jpg | Switch, controller and label detail
File:Copam K-457 -- PCB, underside.jpg           | Underside of the PCB, with no markings
</gallery>

==External links==
*KBtalKing — [http://kbtalking.cool3c.com/article/29596 ■鍵盤史的遺跡Copam+ K-457( Cherry MX藍軸)■]

[[Category:Copam keyboards]]
[[Category:Keyboards with Cherry MX switches]]
[[Category:Office keyboards]]
[[Category:List of all keyboards]]