Hello the integrated fan and the triangle at the front are supplied with power by a single SATA power connection by default, as you assumed. The enclosure fan therefore runs at 100% speed (but is not noticeable in terms of noise level). The illumination of the case and fan can be adjusted and also switched off with a small button on the front IO. Overall, the case is quite cool for mid-range builds such as GTX 1060, 2060, 3060 and of course what falls below.
The outer appearance is great, but the cooling (without additional components) can cause stronger builds, e.g. 3070, 3080, 3090, to thermal stutter.
Or maybe consider using a different case
But if you want to install components that give off more heat, I would suggest installing more fans.
In your case, I would use a splitter for additional fans if necessary, for example:
EKWB EK-Cable Y-splitter for 3x 4-pin PWM fans (10 cm)What else I would note is that you can only install 2x 2.5" and 2x 3.5" drives, but with the latter the cabling can get a bit tight.