This CTW GPT500S-A is a good ol' 500W 80+ Bronze rated power supply pulled from a prebuilt PC. All voltages are normal and remain in line with expected variances. Power cable comes included.

Channel Well Technology is an OEM power supply manufacturer that's been around since 1993 and produces power supplies for your favorite brands. Units such as Corsair and Thermaltake are often manufactured by CWT and rebranded.

Learn more about this unit here: https://www.cybenetics.com/evaluations/psus/468/