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Seagate Barracuda ATA IV - Hard drive - 20 GB - internal - 3.5" - ATA-100 - 7200 rpm - buffer: 2 MB - Walmart.com
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Seagate BarraCuda ATA IV 20.0GB 7200RPM Ultra ATA-100 2MB Cache 3.5" Desktop Hard Drive - ST320011A - Drive Solutions
Seagate Barracuda ATA IV ST320011A 20GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive - Newegg.com
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