X-ray spectra of SN 2011dh: stacked Swift spectrum for t < 10 d (Swift1, black in the upper diagram), XMM-Newton EPIC-pn spectrum taken at t ≈ 7 d (XMM1, red in the upper diagram), XMM-Newton EPIC-pn spectrum taken at t ≈ 11 d (XMM2, black in the lower diagram), and stacked Swift spectrum for 11 < t < 30 d (Swift2, red in the lower diagram). The spectra in the upper diagram are fitted with a combined power-law + bremsstrahlung spectrum, while the spectra in the lower diagram are fitted with a power-law spectrum only. The Swift spectra appear at a lower countrate per energy bin due to the lower effective area of the detector.