CB-C71 HDMI problems

I received my CB-C71 and it works well , but HDMI doesn´t work with a laptop Lenovo Ideapad C340. I tried connecting the cable directly (laptop to screen) and it works perfectly and I tried with another Lenovo trough the CB-C71 and it works perfectly too . Could you help me to solve this problem? Thanks

Hi @elampa

I recommend that you message us via the support email - support@aukey.com - as this will be best for these kinds of technical questions. :pray: