The Vintage Micron 64MB EDO 60ns 168pin Memory MT9LDT872G-6X is a single SIMM module with a total capacity of 64MB. With a capacity of 64MB per module, this Micron memory is ideal for older computers and systems that require high-density memory modules. The 168pin design ensures compatibility with a wide range of systems, making it a versatile choice for those looking to upgrade their vintage computing experience.