HP ProBook 4320s Notebook PC HP ProBook 4321s ... - Warranty Life

USB connector boardDescriptionSpare part numberUSB board with cable 599524-001Before removing the USB connector assembly, follow these steps:1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turnthe computer on, and then shut it down through the operating system.2. Disconnect all external devices connected to the computer.3. Disconnect the power from the computer by first unplugging the power cord from the AC outletand then unplugging the AC adapter from the computer.4. Remove the battery (see Battery on page 51).5. Remove the following components:a. Switch cover (see Switch cover on page 53)b. Keyboard (see Keyboard on page 55)c. Optical drive (see Optical drive on page 59)d. Speakers (see Speakers on page 62)e. Palm rest (see Palm rest on page 66)f. Hard drive (see Hard drive on page 68)g. Display assembly (see Display assembly on page 83)h. Top cover (see Top cover on page 91)i. System board (see System board on page 95)Remove the USB connector assembly:1. Position the computer right-side up with the right side toward you.2. Release the USB connector board cable from the base enclosure clips and routing channel (1).Component replacement procedures 97