Radius TPD-SE Interface Upgrade Kit

I have for sale a complete Radius TPD-SE Interface Upgrade Kit. I am not 100% sure what it is but it seems like an upgrade for some videocard or something. The box contains the following items :

- RadiusWare Diskette
- Software Release Notes
- RadiusWare User's Manual
- Installation Instructions for Software Upgrade Kit
- MPD-SE ROM (U6)
- MPD-SE ROM (U7)
- TPD-SE ROM Low (U18)
- TPD-SE ROM High (U22)
- Wrist Grounding Strap
- RMA Shipping Label

If you're interested please make me an offer.I prefer to sell it since I am moving, but I am also willing to swap it (anything older than 1985 is interesting, excluding MSX, Sinclair and IBM + clones).