There are excellent references in the ZIP HOWTOs at http://www.redhat.com/mirrors/LDP/HOWTO/HOWTO-INDEX/hardware.html#HWJAZZIP. Some people have had problems if they daisy chain a Zip drive and connect a printer to it. Currently, we recommend that you use either the printer or the Zip drive. If you are having problems with an IDE Zip drive, first check and make sure there is a disk in the drive. Also, make sure you are mounting it as partition 4 instead of 1. An example would be hdc4.
If you are copying a file or folder to a floppy disk or zip-drive, insert the disk/zip-disk in the drive. Sending a file or folder to a disk sends a copy. The original file or folder remains in the original location.
The Zip drive and scanner both require being connected to the computer when you boot up, so you may need to get a second parallel port for them.
There is no driver needed for ZIP drive, just install the ZIP drive and during POSTING, the system should detect IOMEGA ZIP drive automatically and same under Windows 95. But there is a ZIP application - IOMEGA Tools to make use of the full functionality of ZIP drive. Windows NT 4.0 doesn't support Power Management, so it is not recommended to use the Save-to-Disk or Save-to-RAM feature.
You can connect most SCSI removable media drives to Next hardware with no additional configuration required. Some drives may require a disktab entry. Jaz drives, for example, require a disktab entry. Zip drives do not. Several Next users have reported success using Zip drives and disks formatted either as Next media (BSD FS) or as Mac media (HFS). OTOH, a number of users (Next and Mac) have reported problems (check an archive of comp.sys.mac.