The HSD-Xi High-speed Data terminal is a 2-MCU size unit. The HSD-Xi terminal operates in conjunction with the eNfusion HSD-440 High-speed Data Transceiver to provide one additional channel of Swift 64 services or one channel of SwiftBroadband Services. Like all EMS SATCOM transceivers, the HSD-Xi allows users to automatically switch from SwiftBroadband to Swift 64, should it be required. In this mode, the unit offers three channels of Swift 64 service. The new transceiver has an External Software Configuration Module (ESCM) that holds one standard USIM card. This provides secure subscriber information for SwiftBroadband operation.
The HSD-440 Transceiver combines SwiftBroadband cabin services and cockpit/safety services on an aircraft using a single 8-MCU avionics unit. The unit's integrated High Power Amplifier (HPA) and two (2) transceiver subsystems provide maximum communications flexibility and redundancy. The HSD-440 transceiver provides channels for ACARS, Aero H+ voice and Inmarsat SwiftBroadband cabin services. The HSD-440 unit, for reliability, automatically switches to Swift 64 services over the Inmarsat I-3 satellite network.

