Silverstone Technology GM400-1UB 400W 1U redundant server power supply

400 W 1U redundant server power supply

The Silverstone GM400-1UB delivers 400 W of continuous DC output in a 1U redundant form factor measuring 106 mm wide by 41.5 mm high by 260 mm deep. It uses a 1+1 hot-swappable design with pull-out handle bars so a failed module can be replaced without shutting down the rack. The unit accepts 90–264 Vrms input at 47–63 Hz and provides a single +12 V rail rated at 384 W alongside combined +3.3 V and +5 V output of 150 W. Active PFC maintains a power factor above .9 at full load.

Thermals, noise and power draw

Two 40 mm DC fans cool the supply, producing a stated noise level of 52 dBA while sustaining full rated output at ambient temperatures up to 45 °C. Overall efficiency falls between 82 % and 85 % at full load with a single module, meeting Cybenetics Bronze targets to reduce wasted heat and lower electricity consumption. Mean time between failures is rated at 100,000 hours, reflecting the industrial-grade reliability focus.

Hot-swap handles and redundant architecture

The pull-out handle bars let technicians remove or insert a module in seconds, eliminating downtime during maintenance. The 1+1 redundant configuration ensures the server remains powered even if one module fails, a critical feature for always-on infrastructure. No additional software or cables are described in the specifications; the value comes from the mechanical hot-swap design and the efficiency certification itself.