Sony VGN-S170 - Manual (Page 115)

Locating Ports and Jacks
The printer port on this port replicator is intended for printer connections only.
Port Replicator (Back Panel)
1 USB ports 4 Monitor (VGA) port
2 Printer port 5 Network (Ethernet) port (10BASE-T/100BASE-TX)
3 DVI-D port 6 DC IN port
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