The LDRR provides TT&C capabilities for a mission in a compact, configurable package. Various daughtercards are added to the system to provide access to different bands and ultimate mission flexibility. On missions without a dedicated watchdog, the LDRR can be configured to accept contingency commands from the ground directly and perform limited actions to recover a system in an anomalous state.

The Terran Orbital Watchdog is a secondary, ‘sidekick’ processor which allows a single spacecraft to carry multiple flight computers, and moderates between them, ensuring that only one computer is actively controlling the spacecraft at one time, and the second module is available as a hot or cold spare. The watchdog also manages some anomaly resolution features, such as long duration timers.

The HDR is designed for large downlinks of mission data, operating in the 500-1000 Mbps regime.

The UART expander provides additional UART channels for missions that may require more connections than are usually provided by the bus.

The State Latch Expander provides additional GPIO signal breakouts for missions that may need more than the standard provided by the bus system.

The UHF antenna module provides a near Omni-directional TT&C communications antenna. When combined with one of Terran’s LDRR radios, this provides a robust solution for low rate communications

The payload interface board provides a variety of standard interfaces for potential payloads to communicate with the bus. This board can also be customized for particular payloads

 The standard PIB contains several options for interconnects, but it can be customized for a particular mission if required 

 This new USB Hub PIB includes gigabit ethernet, as well as USB connections and a USB hub, which allows several payload devices to share a single USB connection to the bus