"RM was one of the first suppliers of computer networks in the UK and, working with Zilog, developed Z-Net, a low-cost network technology that was widely used in UK schools particularly the RM Nimbus model. Z-Net was subsequently replaced by the industry standard, Ethernet. Various generations of RM’s networking products – all of which have been built on standard Microsoft networking software – are currently in use, the most recent version is called Community Connect 4, released in June 2008 following numerous delays.
RM not only provide networking solutions but provide a range of hardware. Most computers and servers are built in their factory, based in Abingdon, Oxfordshire, whilst other hardware, such as laptops, interactive whiteboards and peripherals are either dispatched as is, or re-branded by RM.
Early products such as the RM 280Z, RM 380Z and Link 480Z were based on the Zilog Z80 processor.
The Group switched to Intel processors with the launch of the 80186 based Nimbus PC-186 in 1984. While not 100% IBM PC compatible, the Nimbus PC-186 ran MS-DOS and was a very early example of a computer designed to support Microsoft Windows. Since 1986, with the introduction of the Nimbus AX and VX models, all RM computers have been fully IBM compatible." (Wikipedia)
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