5. Microsoft Premium SoftCard IIe (1983)

Microsoft updated its popular SoftCard product to match with the newly released Apple IIe computer. It was called Premium SoftCard IIe. It supported the new features that Apple IIe had such as double hi-res video mode, more RAM, and an 80 column card.

Microsoft had also released a SoftCard product for Apple III personal computer, the SoftCard III. Like the Apple II SoftCards, the SoftCard III allowed the Apple III to run CP/M software.

6. Microsoft PCjr Booster with Mouse (1984)

PCjr Booster with Mouse which was released in 1984 added 192KB of RAM and a Microsoft mouse interface an IBM PCjr system. It also included a Microsoft mouse to use with the system. With the PCjr booster, an IBM PCjr would have 256KB of RAM, allowing it to use significantly more powerful programs than would otherwise run in the PCjr's limited 64KB memory.