Mitsumi KPQ-E99YC
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| Model no. | KPQ-E99YC |
|---|---|
| FCC ID | CMYKPQ4938 |
| Branding | Commodore, Unisys, and others |
| Manufacturer | Mitsumi |
| Layouts | 101-key US-ANSI, ISO |
| Keyswitches | Mitsumi KPQ Type |
| Interface | AT, PS/2 for Unisys boards |
The KPQ-E99YC is a standard PC keyboard manufactured by Mitsumi, and used by brands including Commodore and Unisys. It makes use of Mitsumi KPQ Type switches incorporated into a curved switch plate and a curved backplate. Therefore, all keycaps have the same height profile.
KPQ-E99YC was sold with no top branding, and Mitsumi's name on the rear label.<ref>RecycledGoods.com — Mitsumi KPQ-E99YC Keyboard</ref> It was also provided as an OEM keyboard to systems manufacturers.
OEM versions[edit | edit source]
Commodore KPQ-E99YC[edit | edit source]
US-ANSI version with Commodore part number 312702-02 has Commodore's "inverted" colour scheme, i.e. the alphanumerical keys have a darker shade of grey than the modifier keys as it is often seen on Commodore keyboards.
ISO versions have been spotted with Commodore P/N 312473-XX and these appear to follow the standard colour scheme. In addition, at least the ISO-ES (Spanish) variety has been found using an AT/XT protocol switch.<ref>Google Photos — Teclado Commodore [Volatile reference] — photos of the Spanish version with the AT/XT switch on the back</ref><ref>Amibay — Commodore PC keyboard like new [Volatile reference]</ref>
- US-ANSI version
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Numpad. The LED shield is missing. -
Without keycaps -
Rubber sleeves of the Mitsumi KPQ Type switches. Note the yellow one for the space bar. -
Side view of the backplane assembly -
Curved metal backplate -
Top view on the switches with the rubber sleeves removed -
Keycaps in detail -
Bottom side of the keycaps -
Stabilizers -
Same profile for all rows -
Label on the back of the keyboard
Unisys PCK-101-KBD[edit | edit source]
Unisys PCK-101-KBD was sourced from multiple manufacturers, including Mitsumi. The keycaps on Unisys boards use lighter alphanumerics and a three shade beige colour scheme.
The blue domes are ~40 g, and yellow space bar domes ~50 g.
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Unisys PCK-101 with a three tone colour scheme and PS/2 connector -
With keycaps removed the domes and plungers are revealed. Bottom sides of the keycaps show the original three-tone colour scheme more clearly
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Label on the back of the Unisys board, note the FCC part number not present on all E99YCs and the OEM manufacturer part number bottom right (KPQ-E99YC)
External links[edit | edit source]
- Geekhack — Commodore keyboards
References[edit | edit source]
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