Starboard 1 mb ram expansion for Amiga 1000. Starboard 2 is the follow up to this item.
Based on online forum research, this unit is believed to be auto-detected by the OS in Kickstart 1.3, but not in OS 1.2 and earlier.
This implies that the memory is likely hardwired into the $C00000 Ranger memory area. The OS 1.3 software-detects this, as OS 1.2 supported Hardware AutoConfig of FastRAM expansion boards.