The answer depends on the power supply in use on the x610
AT-PWR250 - No POE power is available
AT-PWR800 - POE power Available is 480W which allows for
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48 class1 (4W) poe devices
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48 class 2 (7W) poe devices
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31 class 3 (15.4W) poe devices
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16 class 4 (30W) poe devices
AT-PWR1200 - POE power Available is 780W which allows for
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48 class1 (4W) poe devices
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48 class 2 (7W) poe devices
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48 class 3 (15.4W) poe devices
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26 class 4 (30W) poe devices