Trendnet TI-R4U is an industrial power supply with PFC (power factor correction) function, which provides a stable power output for critical applications. It supports up to four hot-swappable power modules, with each module providing 1000W of power at 48V DC. The device can be mounted in a 19-inch rack using the included rack screws.

The TI-R4U features a wide range of protection mechanisms, including overvoltage, overcurrent, and short circuit protection. It also has a built-in cooling fan to prevent overheating.