Mindset had dual front-mounted ROM cartridge ports with a locking knob on the left side of the main computer module to lock the ROM modules into place. The Mindset had the option (through its System Configuration Utility) to be able to select whether the system booted from left or right ROM carts, or disk drive. Cartridges could also contain CMOS RAM, which would be retained when unplugged by a battery in the cartridge case. Cartridges were envisioned to be a primary medium for software distribution on the Mindset, but sales of the system were too low for cartridges to be economical, and software was distributed on disk instead.