Arista PWR-1900AC-R is a 1900W AC power supply module designed for high-density Arista 7260CX and 7280R/7280CR series switches. It features an 80 PLUS Platinum efficiency rating, requires a high-line 200V–240V AC input via an IEC C20 connector, and utilizes a Rear-to-Front (reverse/exhaust) airflow profile.