Apple Color OneScanner 600/27 - Manual (Page 169)

Factory setting
The internal terminator for the Apple Color OneScanner is set to “on,” but
you can change it.
Note: You need an external terminator with the scanner only if you have a
Macintosh IIfx or PowerBook computer. The Macintosh IIfx requires a
special terminator. Make sure you purchase the appropriate item if you need
an external SCSI terminator.
Connecting the SCSI devices
The illustrations later in this appendix show various SCSI arrangements and
show where termination is required. Use the illustrations for reference as you
set up a SCSI chain.
To connect your SCSI devices to your Macintosh computer:
1 Turn off the computer and any SCSI devices, but leave the power cords plugged into
grounded outlets.
2 Touch any of the metal connectors on the back of your Macintosh.
This safely discharges static electricity that may be on your clothes or body.
3 Attach the small end of the system cable to the SCSI port on the Macintosh.
4 Attach the large end of the system cable to either SCSI port on the back of one of the
devices in your SCSI chain.
WARNING Make sure your computer and all SCSI devices are turned off.
If either the computer or any of the devices remains on, you could
damage the computer or the device.
161 Assembling a SCSI Chain