Concepts ETI Sentinel SuperPro Software Dongle 1997 CAD License Key Parallel Port

Description

Vintage Rainbow Technologies Sentinel SuperPro Software Protection Dongle – Concepts ETI S36 (T.CAD 97)

This is an original parallel-port hardware license key (dongle) used with Concepts ETI’s turbomachinery CAD/engineering software from the late 1990s.

• Manufacturer: Rainbow Technologies

• Model: Sentinel SuperPro (DB-25 Parallel Port)

• OEM Label: Concepts ETI, Inc. S36

• Approx. Era: 1997 (T.CAD 97 suite)

• Use Case: Hardware key for license authentication

• Condition: Used, untested — pulled from working engineering workstation in storage.

These keys were used to unlock professional CAD/CAM or simulation software modules and are now sought after by collectors of vintage engineering hardware, license historians, and museum restorers.

Includes: One Sentinel SuperPro dongle exactly as shown.

No software or drivers included.

Item Condition

Used – untested. Cosmetic wear consistent with age (see photos).

Keywords

Sentinel SuperPro, Rainbow Technologies, Concepts ETI, Concepts NREC, Turbomachinery CAD, TCAD 97, parallel dongle, software license key, hardware protection, vintage engineering, retro computing, CAD CAM, industrial design security key, LPT dongle