Classic OptiPlex 7020 Mini-Tower (4th Gen Original)Wattage: 290 W internal proprietary PSUInput Voltage / Frequency: 100 VAC to 240 VAC at 50 Hz to 60 Hz (5 A)Max Heat Dissipation: 989.00 BTU/hrCommon Part Numbers: H290AM-00, L290NM-01, RVTHD [1, 2, 3, 4]

If you are planning a hardware upgrade or trying to replace a broken unit, let me know:

• Which exact year or processor generation your OptiPlex 7020 is
• If you are looking for GPU compatibility limits or replacement part numbers