If you are replacing the network interface card with new one or the serial interface card, remove the two screws and the old card.

5Align the connector on the network or serial interface card with the connector on the control board. Push the card firmly into the connector until it is completely inserted into place.

6Tighten the two screws which you removed in Step 4.

F.8 PROGRAMME INSTALLING PRINTER OPTIONS

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Samsung ML-2150 manual Programme Installing Printer Options