Sunpower 320w enclosed power supply sps 320p xx series sunpower sps 320p 15 the sunpower sps 320p 15 is a 320w single output enclosed power supply from the sps 320p xx range the psu has a standard mounting fixture identical in construction to products of other power supply manufacturers making it ideal as a replacement this highly efficient psu is supplied with the pfc function option designated by the p in the part number the power supply has over voltage overload and short circu