Ian Mavric has modern replacement hardware for those in need of the following:
1) Model I RS-232 Cable
2) Percom Doubler for the Model I
3) Grafyx Hi-Resolution Board for every Model 4 (4, 4P, 4D)
4) Buffered Cable for the Model I Expansion Interface
5) Omikron Mapper-1 for the Model I
Of course, this is on top of the FreHD product
Those interested should reach out to Ian at IanM at TRS-80 dot com.