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You are looking at: Programmable Controllers > DirectLogic Series P... > DirectLogic 405 (Sma... > Memory Cartridges
DL405 Memory Cartridges
The D4-440 CPU requires the use of a memory cartridge and the D4-450 CPU can use a memory cartridge instead of its built-in memory if additional program space is needed. The following memory cartridges are available for the D4-440 and D4-450 CPUs:
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D4-EE-2 - 15.5K EEPROM memory cartridge
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D4-RAM-1 - 7.5K RAM memory cartridge with battery
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D4-RAM-2 - 15.5K RAM memory cartridge with battery
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D4-UV-2 - 15.5K UVPROM memory cartridge
- D4-MC-BAT - RAM memory cartridge replacement battery
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