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Also known as the daughter card, piggyback card, or mezzanine board, the daughterboard is an extension of the motherboard. The daughterboard is typically connected to the motherboard via a series of cables. Similar to the motherboard, the daughterboard has pins, plugs, sockets, and connectors to be attached to other boards.
As for the Lenovo ThinkPad T450 laptop, the daughterboard houses the USB port on the upper left side of the laptop. If you find that the devices you plug into this USB port are not being recognized, it may be time to replace the daughterboard. Follow these simple instructions to replace the daughterboard in your device.
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Using your hands, slide the two locking tabs away from each other to release the battery.
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Slide the battery up and out of the device.
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Using the JIS #00 screwdriver, unscrew seven screws from the back cover.
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Use the JIS #00 screwdriver to remove the single 2.8 mm screw from the back cover.
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Insert a plastic opening tool into the edges of the laptop and work your way around the edges to pry off the back cover from the device.
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Remove the back cover from the device.
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Lift up the black piece of tape and remove it to uncover the RAM sticks underneath.
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Using your fingers, push the two clips securing the RAM away from each other to release the RAM.
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Remove the RAM stick from the device.
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Using the JIS #00 screwdriver, unscrew the four screws securing the fan and heatsink assembly to the motherboard.
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Disconnect the fan and heatsink assembly from the motherboard using the plastic opening tool.
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Lift up the fan and heatsink assembly and remove it from the device.
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Use the plastic opening tool to disconnect the daughterboard cable from the motherboard.
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Using the JIS #00 screwdriver, remove the two 2.8 mm screws securing the daughterboard to the device.
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Lift up and remove the daughterboard from the device.
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To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
