However, the FDC in the [[Vortex Disc Drives|Vortex disc interface]] does have the US1 pin connected, so it can manage up to 4 floppy drives.
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=== ABBA switch ===
The [[ABBA switch]] is a common hardware modification that allows users to swap between Drive A and Drive B.
On Amstrad CPC, some games and other software were designed to run specifically from Drive A, creating a problem when the disk you needed was in Drive B.
The ABBA switch resolved this issue by allowing you to "swap" the designation of the two drives. When the switch is activated, Drive A becomes Drive B, and vice versa, effectively swapping their roles.
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