Driver
HID OMNIKEY 3X21 DRIVER SELF-EXTRACTING ARCHIVE
OMNIKEY 3x21 driver for Windows 8 and 8.1 64 bit
Driver
OMNIKEY 3x21 driver for Windows 8 and 8.1 64 bit
Development Tool
HID OMNIKEY Workbench 64 Bit, Release 1.4.0.14 The OMNIKEY Workbench is the successor of the OMNIKEY Diagnostic Tool.