Early versions of the exclusive board also allowed battery or battery operation. With these models, the module holder could be moved backwards. The recording for 5 batteries or rechargeable batteries (size "baby") was released. Furthermore, the 4th module slot became accessible, for which the only extension was the opening module HG 170 suitable for the MM I module.
The later versions no longer had an accessible battery compartment or 4th module slot.
A 9V / 300 mA power supply is required. Plus is inside.
An S variant of the Exclusive was introduced with the first 68000 modules (Mephisto III-S Glasgow and others). These boards have no internal voltage regulation and must be operated with suitable power supplies (exactly 5 V, e.g. HGN 5004).