Compatible with 400W / 450W / 500W / 550W Desktop Mute Power Supply — Supports Back-Line Cabling

Fits desktop “mute” host power supplies with capacities of 400W, 450W, 500W and 550W. Designed to support back-line (rear cable) routing for quiet desktop systems, this unit is compatible across the listed wattages and intended for use with desktop mute hosts that require rear wiring support.