The TFE3000-54 3000-W, 1U hot-swap power supply delivers 80 Plus Platinum efficiencies with 33.48-W/in.3 power density. Developed by Tectrol, the power supply offers a 54-V floating dc output that’s adjustable from 42 to 55 V dc, which suits it for Power-over-Ethernet, telecom, and networking applications. Standby output is either 3.3 or 5 V rated for 2 A. The 1.6- by 4- by 14-in. supply includes digital I2C/PMBus status and control, and a single rear blind-mate connector for ac input, dc output, and status/control connections. An optional 1U 19-in. power shelf can mount up to four power supplies for N+1 or 2N dual-feed redundancy operations. The units are safety-approved to cTUVus 60950-1.