According to our information, the PC should have 1x USB3.1 Type-C at the front and a USB 3.2 Type-C port at the rear. According to available information, a Thunderbolt port is not available.
Unfortunately, we do not have any information about the fans. If you can control the RGB lighting via software, look for a setting that adjusts the behaviour during booting. Alternatively, you can also contact the manufacturer's support team: https://www.captiva-power.de/service...