CORSAIR TX-M Series TX550M 550W ATX12V v2.4 / EPS 2.92 80 PLUS GOLD Certified Semi-Modular Power Supply. TX Series semi-modular power supplies are ideal for basic desktop systems where low energy use, low noise, and simple installation are essential. All of the capacitors are 105°C rated, Japanese brand, to ensure solid power delivery and long term reliability. 80 PLUS Gold efficiency reduces operating cost and excess heat. Flat, sleeved black modular cables with clearly-marked connectors make installation fast and straightforward, with good-looking results.