TRS-80 Model 1 L2 - Quinnterface & FreHD Interface

"Quinnterface" is a Mini Expansion Interface for TRS-80 Model I with 16K. Neat little device is perfect for Model I users who own a 16K Level II unit (which is most of you) but no EI or Disk Drives, and don't want to modify your Model I with upgraded boot Rom or memory upgrade. The Quinnterface, developed by J. Andrew Quinn from New Zealand, adds 32K RAM and auto-boot functionality to your FreHD. "FreHD" SD Card HARD DRIVE Emulator for TRS-80 Model I/III/4.