These do not have a built-in controller and require a "Flash File System" driver to appear as a drive letter.
This is where the cards shine. The driver is usually a .SYS file loaded via CONFIG.SYS . Smart Modular Technologies 4mb Flash Card Driver
You might assume that a 4MB flash card would be recognized as a generic removable drive. This is often false due to three technical barriers: These do not have a built-in controller and
However, Smart Modular Technologies 4MB Flash Cards (Linear Flash) operate differently: Smart Modular Technologies 4mb Flash Card Driver