There is another variant called the System 573 Satellite Terminal which allows for up to eight cabinets to be networked to a central one.

Also added was an IDE port, RTC with battery backed SRAM, dedicated JAMMA and JVS interfaces, a security cart which could be used to easily add basic expansion I/O hardware and dual PCMCIA slots, although these are only wired up as memory devices and cannot be used for I/O cards.

The System 573 exists in several configurations, sharing the same base motherboard but being packaged into various cases and with addon IO expansions for different games.

Such configurations include: Konami's e-Amusement service was available on some games with the use of a separate network PCB, which plugged into the System 573 using the lower PCMCIA slot.

It used a system-on-a-chip design and ran a customised version of Toshiba's NetNucleus software to connect to the service and download data onto a 20GB IDE hard disk drive.