For the computer guru who loves to tinker under her computer's hood, upgrading her PC's internal hard drive to a higher-capacity model can provide more room for digital collections and computer games, with storage capacities that can reach into the terabyte range. Internal drives boast high read and write speeds, which make them a more efficient option than external models. Available connections for internal models include EIDE (Enhanced Integrated Drive Electronics), Ultra ATA (Advanced Technology Attachment), and SATA (Serial ATA). SATA will offer maximum transfer rates, but EIDE and Ultra ATA are compatible with older computers.
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