It contains a universal 7.5 system allowing you to boot any old Macintosh from Mac Plus up to Quadra 900. Various old apps and games are included. The item "Apple 20SC external SCSI hard drive Model M2604Z 1984" is in sale since Thursday, August 13, 2020.This item is in the category "Informatique, réseaux\Informatique vintage\Pièces, accessoires". The seller is "ekomatic" and is located in Bazoches. This item can be shipped worldwide.