Figure 1-2. Omnibook XE4400— Back View 14. AC adapter jack. 15. Two USB ports. 20. S-video port*. 21. Kensington lock slot (security connector). 16. LAN port*. 22. Modem port*. 17. PS/2 keyboard or PS/2 mouse port (supports Y adapter). 23. IEEE 1394 port*. 24. Two PC Card and CardBus slots and buttons. 18. Parallel port (LPT1). Use this port for a parallel printer or other parallel device. 25. Floppy drive*. 19. External monitor. * on certain models HP Omnibook XE4400 Product Information 1-3