Does your HP laptop not charge unless you wiggle the cord? The DC power jack (the socket where you plug in the charger) might be worn out. This is a brand new replacement power jack that's compatible with the HP ZBook 15u G3 and G4 mobile workstations, as well as some HP Pavilion models. It comes new in its original packaging (might be generic). Replacing this little part can fix a whole bunch of charging problems and save you from a costly motherboard repair. It's an unbranded/generic part, but it's made to match the original specs. Before you buy, double-check your laptop's exact model number and the old jack's part number (like 839233-601 or 839235-001) to make sure it's the right fit. If you're handy with a screwdriver, this is a pretty common repair. Get your laptop charging reliably again and avoid being tethered to an outlet. A simple fix for a frustrating problem!