Spare partnumberDescription646335-001 Top cover for use in 4430s/4431s models with a fingerprint reader and USB 3.0646337-001 Top cover for use in 4430s/4431s models without a fingerprint reader and with USB 3.0646339-001 Base enclosure for use with 4330s/4331s models646340-001 Base enclosure for use with 4430s/4431s models646341-001 Bottom door646342-001 Display bezel for use with HP ProBook 4330s/4331s models without a webcam646343-001 Display bezel for use with HP ProBook 4330s/4331s models with a webcam646344-001 Display bezel for use with HP ProBook 4430s/4431s models without a webcam646345-001 Display bezel for use with HP ProBook 4430s/4431s models with a webcam646346-001 Display enclosure for use in HP ProBook 4330s/4331s models646348-001 Display enclosure for use in HP ProBook 4430s/4431s models646275-001 Webcam cable646352-001 WLAN antennas646353-001 WWAN antennas646354-001 Display hinges (includes left and right hinges)646355-001 Display hinge covers646356-001 Heat sink for use in computers with discrete graphics646357-001 Heat sink for use in computers with UMA graphics646358-001 Fan646359-001 Optical drive connector646360-001 USB 2.0 board646361-001 Card reader board646362-001 Quick Launch board646364-001 Speaker assembly646365-001 Keyboard for use in models in the United States646365-031 Keyboard for use in models in the United Kingdom646365-041 Keyboard for use in models in Germany646365-051 Keyboard for use in models in France646365-061 Keyboard for use in models in Italy646365-071 Keyboard for use in models in Spain646365-121 Keyboard for use in models in French Canada646365-131 Keyboard for use in models in Portugal38 Chapter 3 Illustrated parts catalog