SCR-3310 v2.0 reader cannot read modern CACs on macOS 10.15.7+

macos

Symptoms

SCR-3310 v2.0 is detected but cannot read G+D FIPS 201 SCE 7.0 or Gemalto DLGX4 128Kv2 CACs.

Likely cause

Firmware below 6.02; HID does not ship a Mac-runnable update for older units.

Fix

1. About This Mac > System Report > Hardware > USB > locate SCR3310 v2.0. 2. Check the Version field. If below 6.02, you must replace the reader - get one from militarycac.com/usbreaders.htm.

Sourced from militarycac.com. Rewritten for clarity.

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