HP 826374-001 USB/audio/card reader board is a replacement board for the HP ProBook 440 G3. It brings the USB, audio and card reader functions together in one laptop component.
The board connects to a large ribbon cable and a separate small ribbon cable for the touchpad. The service guide lists the board cable separately as part of Cable Kit 826399-001, so the board itself should not be described as including that cable.
The guide shows the board installed in the computer’s top cover and documents it as a replaceable component. This makes it a relevant service part when replacing the USB/audio/card reader board in the listed ProBook model.