There are shitty ones and good ones. I ordered the first one on the advent of these di2 adapters and it was made of cheap 3d printed plastic and fell apart after two charges, the electronics were fine. I now have waaay sturdier adapter from Rrskit and it works great. I just hate too many cables and having one usb-c with adapters is way more convenient. I use it to charge di2 conveniently at home and for travel and it is great (for now).