Changes
/* A1-S Upgrade Kit */
=== A1-S Upgrade Kit ===
Vortex offered an upgrade kit consisting of a single bare drive and an installation manual, allowing to upgrade a single F1/M1-S (single) drive to a dual F1/M1-D (dual) drive. To do this, one simply had to install the additional drive in the free slot of the drive case.
=== FDA-1 3" Drive Adapter ===
