Emax

I recently purchased an Omega 100 zip drive on ebay in hopes of 
upgraing my emax 1000 with an SCSI port. However, I discovered that 
an upgrade kit is no longer available.Is the emax 2 the only emax 
with a pre-existing SCSI port? What are the advantages to having a 
zip drive and is there a large library of sounds available in this 
format? Thanx for future info- Angelo