7.4mm x 5.0mm to STRAIGHT 4.5mm x 3.0mm DC Plug Adapter for HP ModelsStock code - GGBrand New and high quality adapter cable which can convert round 2.1mm x 5.5mm DC connector from suitable DC power supply to Blue Tip 4.5mm x 3.0mm Power Tip as used in HP ENVY/ULTRABOOK rangesThis is a special convertor/adapter plug for use with Later HP models allowing use of power supplies with larger older style connectorYou need to make sure the voltage and current output on your existing power supply are compatible with your new laptop/notebook before using with this adapter - failure to do so could result in permanent damage to your equipmentEnd 1 = Female 7.4mm x 5.0mm DC Socket - to accept 7.4mm x 5.0mm Male Jack from power supplyEnd 2 = Male Blue Tip 4.5mm x 3.0mm with Centre Pin - to fit into your new laptop/notebookTHIS LISTING DOES NOT INCLUDE ANY POWER SUPPLY - THIS IS FOR ADAPTER PLUG ONLY - WILL NOT CHANGE VOLTAGE/CURRENT, ONLY TIP SIZE EAN 5060454550105 Connector B 4.5mm x 3.0mm Blue Tip Compaq HP Brand P2G Connector A 7.4mm x 5.0mm Round Compaq HP MPN P2GADCAB74.50.45.30B Manufacturer warranty 1 year Type DC Adapter Cable Cable Length Approx 12cm Unit Type Unit