Fix the Toshiba PA3290E-2ACA AC Adapter DC power jack on the outer case not on the mother board so that the soldering at the mother board is isolated from any external shock.
There is a Perfect Hole.
It's usually unused in modern computing unless you have dial-up. As in the other Instructable, the Toshiba PA3290E-2ACA AC Adapter power jack was removed from the mother board.
Then the jack is soldered to the electric cords.
The Toshiba AC Adapter power cord is from an laptop ac adapter for my old telephone. It could be any power cord. However, it should be thick enough to support the electric current needed for laptop. Therefore the use of those audio cable, phone cable etc. are not recommended.

As you see in the figure, I glued the Toshiba PA3290E-2ACA AC Adapter power jack to the space where the modem jack was originally using hot glue. The other end of the cords were soldered onto the mother board where the Toshiba AC Adapter power jack was originally. You can put the PC board back on.

Now you can see the empty hole which was occupied with Toshiba PA3290E-2ACA AC Adapter power jack before. And the modem port now occupied with power jack. In order to reduce any stress to the newly fixed laptop ac adapter power jack, I made a restrainer that keeps any shock away from the power jack by transducing the shock to the ethernet jack.

Just cut a piece of ethernet cable and tape it back to the cable for making a small loop. Attache a rubber band to the loop in order to absorb any excessive shock. Attache the rubber band to the Toshiba PA3290E-2ACA AC Adapter power cord. Even if you pull the power cord abruptly, the rubber band absorb the most of the shock and the ethernet cable pulls the computer gently.

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