Very Helpful Cable Adapter

I have this adapter - () for my new notebook type "Lenovo G700" ordered (Rectangular Power adapter connector) because I had bought at the flea market a very favorable and more powerful (wattage) Lenovo PSU (as replacement or secondary power supply). However, this had a round power connector, but the voltage and polarity properties are the same and are also observed in the use of the adapter! So long "and short of it", tested, everything works exactly as it should. A positive side effect, the wattage-stronger power supply remains cool as the original power adapter. I would recommend the adapter cable for people with similar problems, with no restrictions.