GINTOOYUN PD65W Lenovo Square Mouth to USB-C Charging Cable Lenovo Square Mouth to Type-C Charger Power Adapter Cable for Laptops,Mobile Phones,Tablets, Rechargeables,etc(7Inch)(Lenovo Square Mouth)

Trust me... for those of us who have SEVERAL Lenovos around, from the last fifteen years (really, yes, and still working fine... mostly as Linux boxes)...We grew accustomed to the YELLOW RECTANGULAR signature power connection from way back, which was the only one we needed from laptop to laptop incarnation for years... up to about two years ago.Then when the USB-C power connectors came out, we had to swap out power blocks around the home/office for a new type Lenovo coming in... That was not convenient for using old and new at the same time.But this little device allows for JUST THAT MODEL... leaving the existing 2009 power blocks in place, and just adapting the output to USB, for the newer more sleek laptops!Easy Fix, and SUPER convenient!!

I have an old barrel connector to charge a Jackery explorer 240. I upgraded to a v2 and it does not have a barrel input, only type C. This connector allows me to use my old barrel connectors to charge the new battery.

I've previously used a different brand of this item, and it worked perfectly. This one does not. The power flickers and cannot charge my computer. I bought two of these, and neither of them can power my computer. I thought maybe my power supply was bad, but no - it works with my other computer that takes the square plug. So this this is a complete waste of money.

Much better than the factory adapters I was using to feed two solar panels to my little 100 watt "solar generator"

Item works, gets a little hot when in use with my 135W power adapter.Sometimes the charge is not read by my laptop, but if you unplug the power to this adapter and plug back in, while the other end is still plugged into laptop, it will read the charge and it works again.

Since the Jackery explore 100 does not come with an adapter to charge via solar I purchased this to connect my Solar Saga 100.It Works so well I purchased another one as a backup.

it worked - able to reuse old lenovo power adapter. hoping to find one that can work for the round-tip chargers.

Wish I’d seen JD’s review before I bought this. The description is not clear that this is a one-way cable: the DC 5521 apparently needs to be the input and the USB C only works as an output. To use with Starlink, you need the reverse (USB C input / DC 5521 output). So this did not work at all for me. It may work ok for powering a USB C device from a barrel power supply, but that’s not what I needed or thought I was getting. It does not work for powering a DC 5521 device from a USB C PD source.