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The drive we are selling is a SATA drive. If you are not sure what type of hard drive interface (IDE/PATA or SATA) your laptop is compatible with please contact us, consult your user manual or look up the information on your laptop manufacturer's website. Your laptop with take either one and they are not interchangable.
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Dell Inspiron 15-5558 500GB Hard Drive
new factory sealed 500GB Toshiba branded hard drive, thin 7.0mm height, 3.0Gb/sec transfer rate, SATA, 8mb cache, 5400rpm