APEK4490EES-01-T-DK is an AC/DC Switch Mode Power supply from the E2 series by Allegro Micro Systems. This specific model is rated for 115/230 Vac universal input, 48V output power, 3.9A output current, and 90W output power. This power supply features efficiency of up to 85%, has a no-load power consumption of less than 0.3W, input surge immunity of IEC 61000-4-5, and EMI/RFI Noise filtering of EN 55022 (Class B) and FCC Part 15 (Class B). This power supply is housed in a robust 2” x 2.5” x 1” package, weighing just 140 grams. It is designed to operate between -10°C and +60°C in dry non-condensing environment, protected against short circuit, overvoltage and overtemperature, and housed in flame retardant UL94V-0 rated plastic enclosure.