SM-S0301 with an FCC ID of 2AJ5F-SM-SO3015 has 4 mains power and 4 USB ports. Each mains power is independently controlled and the USB group is controllable via a solid state relay. The ESP8266 module inside is a TYWE3S by Tuya.
Model purchased SM-S0301 (it seems to change on Amazon and other places, search for the model#). Other resellers may sell the same unit with various mains voltages/plug types.