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The 512MB DDR 400MHz DIMM Memory Module (Mac) from OWC/Other World Computing is designed for select Apple Power Mac G5, Power Mac G4, iMac G5, Mac mini, and Xserve models, and is also compatible with certain Intel/AMD process-based PC desktops. The module fully meets Apple's specifications with special attention to proper thermal specifications, and is also fully compliant with JEDEC specifications. This module has a CAS latency of 3.0 and is optimized for PC-3200 operation, but it also supports PC-2100 CAS 2.0 or 2.5 operation, and PC-2700 CAS 2.5 operation.