If your 165W USB-C 4-Port PD GaN Charger is not charging or charges slowly, try these steps:

• Use an E-Mark USB-C cable, such as the Satechi USB-C to USB-C 100W charging cable, for best results — a cable that isn’t E-Mark rated will limit the power delivered.
• Try a different USB-C cable to rule out a cable issue.
• Plug into a different wall outlet or power source, avoiding extension cords and surge protectors.
• Connect just one device for the fastest charge — the four ports share the charger’s 165W total, so each delivers less power when more devices are plugged in.
• Try charging a different device to see whether the issue is the charger or your original device.

If it still won’t charge with a known-good cable, submit a support request.