Connectors: 4 Pin 12 V, 24 Pin, 4 Pin Peripheral, Floppy Drive, SATA I Cooling: 1 Fan Physical Dimension: 3.4" x 2.5" x 7" Replacement for: HK340-71FP Lenovo M series Thinkcenter 0A37770 320W Larger wattage gives you more stable system, cleaner power, and more upgrade possibility. FEATURES: It includes these output connectors: 24(20+4)pin, P4-12V 4pin, SATA II 15pin, LP4 4pin, and FDD 4pin. Internal 40mm ball-bearing fan and thermal fan speed control are also included for maximum heat and noise dissipation. Rise time Less than 20ms Hold-up Time 17ms Minimum at Nominal Input Voltage Output Voltage +5V -5V +12V -12V +3.3V +5V-SB Current 15A 0.5A 17A 0.8A 15A 2.5A