Sydos Puma 88 Drive

I just purchased a Puma 88, model: Sydos Puma 88 at the local thrift store for $12.21 It's an external 88MB Drive unit.. I has 11 Syquest 88MB Cartridges included with it. I think it is for a PC machine as some of the carts say windows on them .. It has a cable on the back with a 25 pin male connector on the end.. Not sure if it SCSI, or Parallel ? (Guessing its SCSI, but it has a small box (about the size of a atari game cart) on the connecting cable between the unit and the 25 pin male connector) Could this be a Parallel port adaptor ? Does anyone know ? Wonder where I could find a driver for it..? Anyone know wher I can get some info on this unit ? Seems to work I powered it up and it spun up to speed and I heard the head access the cartridge.. Any Ideas ? Thanks , Phil...