Power Requirements Power source: Power source: Decided on Antec 550 W PC power supply Decided on Antec 550 W PC power supply Delivers 18A on 12V output = 216 W Delivers 18A on 12V output = 216 W Powering 12 readers on one supply- Powering 12 readers on one supply- 216 W / 12 = 18 W each.
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