The FRM220-CH20 is a 2U high 19" Rack, 20 slot modular media converter center. The FRM220 provides an economic solution in high density Fiber Converter installations in enterprises or central offices. The Power Modules are designed for redundant power supply operation. All critical components, Power, fans, management module and interface cards are hot swappable allowing online maintenance and field replacement. The hot-swappable power supplies may choose from AC100-240V, DC18-36V, and DC 36-72V.