DF0: - DF2: Buffered boot selector for the Amiga 2000 (DF1: or DF2: Device support choice by means of 2 Jumpers).
Including boat selector switch with +/- 30 cm connection cable.
Buffered DF0: - DF2: Bootselector for the Amiga 500/2000.
The buffer ensures that switching from DF0: to DFx: (And vice versa) is not mechanical but electronic.
That in turn minimizes the chance that your MOS CIA (8520) will malfunction due to the switch.
A mechanical switch is still used for this, but only to trigger the electronic switch.
This bootselector is extremely suitable for the Amiga 2000, since the external drive is mounted as drive DF2: for the Amiga 2000.
The bootselector can also be configured to switch DF0: - DF1: by means of 2 jumpers, so that you can also boot from a 2nd internal drive (Gotek drive / 5.25 FDD) if it is built into your Amiga 2000 as DF1 :
Of course, the device can also be used in an Amiga 500, if there is a need to be able to boot from DF2: for the Amiga 500.