If these machines are not compliant there is the possibility that users will not be able to gain access to or properly use the Internet. A lot of information has been already been published on PCs, including the Homecheck documentation, setting out how to check PCs and where to find further information. The second is small switches and similar equipment used by businesses to provide their in building network. Date dependent software often exists in these installations and it is essential that users should check the status of the equipment with their supplier or maintainer. Industry are actively planning for this and problems should be minimized.
Work is in hand and advice is available.
If you are concerned, check with your suppliers.