Epson Expression 1680 - Manual (Page 97)

4-28 Options
Using the IEEE 1394 Scanner I/F Card
The optional IEEE 1394 Scanner I/F Card (B808343) offers high-
speed data transfer and flexible connectivity for your scanner. It
supports a peak data transfer rate of 400 Mbps. You can connect
or disconnect the interface cables without having to turn off the
scanner or your computer. You can connect multiple IEEE 1394
devices simultaneously in either a daisy-chain or tree
configuration.