HP ProBook 4740s Battery Connector 50.4SJ04.011

HP Probook 4740s WLAN Mini PCI-E Wireless Card

HP ProBook 4540s 4545S 4740S CPU Cooling Fan 683484-001.

HP ProBook 4740s Dual USB Board with Cable 50.4SJ03.011

HP ProBook 4740s DVD Optical Drive Connector Board 48.4SK02.011

HP ProBook 4540s/4545s Laptop Hard Drive Connector Replacement - P/N: 48.4SJ02.0

HP PROBOOK 4740S CD/DVD OPTICAL SATA DRIVE CONNECTOR BOARD 48.4SK02.011 (O24)

HP ProBook 4740s DVD Optical Drive Connector Board 48.4SK02.011