12CM big fan, super quiet, quiet and comfortable. Maximum output power 420W, built-in PFC, magnetic amplifier circuit; Black case; using 12cm large fan for better heat dissipation; 100% high temperature aging, 100% ATE test; 20PIN +4 PIN (motherboard power supply), large 4PIN Interface 4 (parallel port CD-ROM drive power), 4PIN Interface 1 (CPU power), 5PIN SATA port 2 (serial port CD-ROM drive ...