HP Elite 8300 Series Convertible Minitower Maintenance And Service Manual page 86

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Some flat ribbon cables come prefolded. Never change the folds on these cables.
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Do not bend any cable sharply. A sharp bend can break the internal wires.
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Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
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Never crease a SATA data cable.
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Do not rely on components like the drive cage, power supply, or computer cover to push cables
down into the chassis. Always position the cables to lay properly by themselves.
74 Chapter 5 Routine Care, SATA Drive Guidelines, and Disassembly Preparation