Only I find it an impudence of Lenovo, the MWN have no own 12 V power supply in the program (and especially with notebooks is that to be so requires ever more often, and be quite helpful), this cable to a rather "excessive" price to sell as an accessory, rather than settle the device right away!
And who is looking for a suitable and good 12 V power supply, which this was here; psc = 1
recommended. A suitable adapter for this cable here is one where the delivery.