IBM PS/55 Keyboards
The IBM 5576 keyboards were a series of keyboards for IBM Japan's PS/55 line of computers which were produced from 1987 to 1995. They were made by a variety of manufacturers using a variety of switch types, and are PS/2 compatible. The designation was also given to some cost reduced rubber dome/sleeve keyboards that were used on PS/V Aptiva, the successors to the PS/55 line. While earlier members of the 5576 series were quite similar, later designs deviated such that it is hard to define common attributes for these keyboards.
Keyboards[edit | edit source]
IBM 5576-001[edit | edit source]
This version has Alps Plate Spring.<ref name="matty" />
IBM 5576-002[edit | edit source]
This version has Alps Plate Spring.<ref name="matty" />
IBM 5576-003[edit | edit source]
This version has Brother buckling spring<ref name="sandy" /> and a standalone numpad with the same switch mechanism (P/N: 65X1138), which was sold separately, can be connected to it via PS/2.
IBM 5576-A01[edit | edit source]
This version has Brother buckling springs.<ref name="sandy" />
IBM 5576-B01[edit | edit source]
This version has Mitsumi KPQ Type hybrid switches. <ref name="B01" />
IBM 5576-C01[edit | edit source]
This version has a TrackPoint II pointing stick with two mouse buttons and uses IBM buckling spring.<ref name="sandy" />
IBM 5576-B05[edit | edit source]
This version is a plain rubber dome OADG109 JIS layout keyboard with Windows keys<ref name="matty" />, manufactured by Chicony as a rebranded KB-5923/8923 variant. The model number of this keyboard is KB-8920.
IBM 5576-B06[edit | edit source]
This keyboard is a black version of the B05.<ref name="b06" />
References[edit | edit source]
<references> <ref name="sandy">Sandy55 - An overview of 5576 keyboards.</ref> <ref name="B01">http://mitateda.blog.fc2.com - A page showing the B01 with a buckling rubber sleeve and membrane with Mitsumi branding.</ref> <ref name="matty">Matty AT Review - A blog post reviewing several Japanese IBM keyboards.</ref> <ref name="b06">Kirin Info - A description of the B06 which matches the B05.</ref> </references>
