58 Pa. Code § 461a.21
(a) The following terms, when used in this section, have the following meanings, unless the context clearly indicates otherwise:
(ii) Receive, store and authenticate Board-approved slot machine games and other approved software for use on server based slot machines.
Server based slot system—A system comprised of one or more server based slot machines connected to a server based slot machine server and its ancillary computer network for the purpose of facilitating access by a server based slot machine to Board-approved slot machine games and other approved software residing on the server based slot machine server.
Server based slot machine—A slot machine accessing a server based slot system.
Slot machine server—A computer configured to: