I knew the Devolo CPL type long (with old type models "200") Well I knew he must consider things like: - Do not plug into a power strip - Have recent electrical system or fit - Beware of electrical or other disturbances - Etc ... But there, Devolo has really improved its products, significant speed up for connected devices, with their perfect management "cockpit" software to administer the PLC network (add, or turn off the LEDs, etc ...) In addition, this model, with two ethernet jacks is +.