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350W Power Supply

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350W Power Supply

This is the 350W power supply I’m using per phone box, and it’s been a solid budget option for this kind of build. With proper headroom, it’s more than enough to run roughly 48–50 phones in a stripped 4U server chassis while keeping the wiring clean and consistent.

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Pros

  • +Affordable for scaling multiple boxes
  • +Enough capacity for ~48–50 phones per box with headroom
  • +Simple per-box power design

Cons

  • -You still need good distribution rails/terminal blocks
  • -Always plan headroom so you’re not running it at the limit

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