Leahy-normalized power spectral density of 2SXPS J075542.5−293353 obtained using 3–80 keV light curves observed by NuSTAR (observations 80102103002 and 90601322001). The frequency is normalized to the spin frequency. We note the presence of strong red noise at lower frequencies modeled as a broken power law (red line) typical for accreting systems. The blue dashed line corresponds to expected white noise level.