Introducing the OmniBook OmniBook Features OmniBook—Back View 20. Kensington lock slot (security connector). 23. External monitor port. 21. Serial port (COM1). 22. Parallel port (LPT1). 24. Universal Serial Bus (USB) port. 25. Docking port (for the port replicator or docking system). OmniBook—External Module Bay 26. External module bay. 27. Floppy disk drive plug-in module. Reference Guide 15