Hub GN28K not working home › Forums › Macbook › Hub GN28K not working This topic contains 0 replies, has 1 voice, and was last updated by MartinS 11 months, 2 weeks ago. Viewing 1 post (of 1 total) Author Posts September 4, 2018 at 1:55 pm #13545 MartinSParticipant Hi, My GN28K ports are not working. I tried the USB ports with a USB key, my phone the USB C port is also not working. When I plug the charger it does recharge the Macbook. I running a 2018 Mac Book pro touch bar baught in July. Any help ? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.