The Lenovo 260W TFX power supply (model 5P51D77141) provides reliable power for small form factor desktop computers and compact workstations. With a maximum output of 260 watts, this power supply ensures stable voltage regulation across multiple power rails, including +3.3V, +5V, and +12V outputs. The TFX format measures approximately 85 mm in width, 65 mm in height, and 175 mm in depth, making it compatible with space-optimized case designs. It features standard ATX power connectors with a 24-pin motherboard connector, a 4-pin CPU power connector, and several peripheral connectors for storage devices and expansion cards. The unit operates with high efficiency, typically achieving over 80 percent energy conversion efficiency under various load conditions. Built with high-quality components and robust thermal management, this power supply includes a quiet cooling fan that automatically adjusts its speed based on temperature and load requirements. The metal casing provides electromagnetic shielding and structural durability. Designed for continuous operation in office environments and home computer systems, this power supply ensures consistent performance with protection against overvoltage, undervoltage, and short circuit conditions. Its compact design makes it suitable for upgrades or replacements of power supplies in Lenovo small form factor systems and other compatible desktop computers that require TFX power supply solutions. Installation is straightforward with standardized mounting points and clearly labeled connectors for proper system integration.