Epson Expression 1680 - Manual (Page 100)

Options 4-31
4. Secure it with the retaining screws.
5. Reconnect all cables.
Understanding IEEE 1394 connections
The Scanner I/F Card is equipped with two cable connectors. One
is used to connect the card to the computer, and the other is used
to connect other IEEE 1394 devices in a daisy chain or tree
configuration. Use the cable supplied when making the
connection. The cable can be connected without switching off the
power supply to the computer or the scanner because it complies
with the IEEE 1394 standard. Cables can be connected whether
the scanner or computer are on or off.
c
Caution:
Do not connect or disconnect IEEE 1394 cables when the scanner
is in use.
Connecting the scanner
To connect the scanner to your computer or other IEEE 1394
device: