The details of the Nitrokey Storage says, that ECC is supported

"Secure key storage for encryption of emails, hard disks and files. Compatible with GnuPG/OpenPGP, S/MIME, X.509, SSH, TrueCrypt/VeraCrypt and many more. RSA-2048, RSA4096, and ECC-256 are supported."

however, the comparison sheet of the NitroKey devices says the opposite.

 

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