SED Opal support for SanDisk Extreme Pro USB 3.1 256GB

Hello, is there a SED (Self encryption Disk) support for the SanDisk Extreme Pro USB 3.1 256GB USB-Stick? hdparm -I says yes: Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count supported: enhanced erase So i set a password with hdparm --security-mode h --user-master u --security-set-pass PASSWORD /dev/sdb But when i set a password i can´t unlock the drive with hdparm --security-unlock PASSWORD /dev/sdb SECURITY_UNLOCK: Input/output error only reseting the device with hdparm --security-erase NULL /dev/sdb gives me full control back. What am i doing wrong?