While approximately 4,000 Keyboard Components were manufactured, it is not clear how many of them actually found their way into the hands of Intellivision customers. Today, very few of them still exist. Many of the units were dismantled for parts. Others were used by Mattel Electronics programmers as part of their development system. A Keyboard Component could be interfaced with an Intellivision development system in place of the hand-built Magus board RAM cartridge. Data transfer to the Keyboard Component RAM had to be done serially and was slower compared with the Magus board parallel interface.