Avision AV6240 - Manual (Page 16)

2-9
Connecting the SCSI cable to the scanner
If the scanner is the only (or final) SCSI device connected to
your host computer, you have to plug the Regular End
Terminator into the unused SCSI connector on the scanner (See
Figure 2-6). The scanner will not function properly unless
every SCSI connector is either connected or terminated.
If the scanner is linked in a SCSI chain (between the host
computer and other devices), plug the SCSI cable from other
devices into the unused SCSI connector of the scanner (See
Figure 2-7).