1RU, Modular, Media Conversion Chassis The Allied Telesis MCF3300 is a 1RU three-blade chassis able to support up to 24 media conversions, dependent on connector type. The MCF3300 is powered by hot-swappable AC or DC power supplies, which allows for flexibility amongst connection types and speeds. At 1RU high, it is the industry's smallest form factor model for up to 24 media conversions.