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HUB board
Power off the cabinet where the HUB board is in,
Take off all the cables from bad HUB board as shown below
Remove the bad HUB board from the cabinet and then remove the receiving card from the
bad HUB board as shown below
Bring a new HUB board and install the receiving card into the new HUB board, and then
install the new HUB board on cabinet as shown below
Install all the cables into the new HUB board as shown below
Power on the cabinet
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