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Macintosh LC 520
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=== Logic Board === The LC 520 logic board (Apple part number 820-0368-A) is essentially identical to the [[Macintosh LC III]], featuring: * '''Motorola 68030''' processor at 25 MHz with 32-bit data bus * '''Optional 68882 FPU''' socket for floating-point operations * '''Enhanced LC PDS slot''' supporting both 96-pin (LC/LC II) and 114-pin (LC III) expansion cards * '''72-pin SIMM slot''' for memory expansion
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