The 1GB memory module was not in an original manufacturer-boxing, but stuck in a white envelope, which is not protected against electrostatic charges (no ESD packaging).
The bar was a little bent around and was not plan, as it should be technically.
After straightening the memory bar and built in a Medion Pentium 4 (PC2100 / 266MHz) were but the 1024MB detected immediately. The function is perfect for 7 months.
Conclusion:
++ Function with PC2100 (Medion / Intel) perfectly compatible
- No original packaging / no ESD packaging
- Slightly curved around