Does anyone know how long the power cable is for the Deco P9 ? and if i were to purchase a longer cable (figure of 8 power lead) would the powerline system still work with the unit or is it only with

Hi. im looking to purchase this product to get a full mesh system in my house, however I'm hesitant as it is very unclear how the power line part actually works or is sett up. I know how normal power