All-in-one installers like the kalyway dvd (ideneb, etc) are illegal, because they contain a modified version of the original leopard install disc. However, breaking a EULA is only breaking a license agreement, not the law. The efix dongle is a legal alternative, since it allows you to install leopard from an unmodified apple dvd. It’s a bit pricy, but it’s legal alternative to the efix version.”]
Source: https://gizmodo.com/unboxed-psystar-open-3-looks-like-any-other-hackintosh-5215300