The Floppy 9900 has a external power supply, one diskette station with one read / write head and a motherboard. On the motherboard you will find RAM and ROM memory, twice a MOS 6522 VIA and a MOS 6502 processor. The Floppy 9900 disk drive is a smart device, reading and writing works independent of the connected computer.
The Floppy 9900 disk drive is a so called clone, and is 99% compatible with a Commodore 1541 disk drive.