Antwoord op "How to clean the slot for the game card?"Do NOT use Q-tip. Don’t repeat my mistake. Unlike Ethernet connector, where the contact wires only expose their middle, in the reader in the Switch the contacts’ ends are loose. See the picture. What a bad design decision. As a result, if you push Q-tip behind the contact end, and then try to pull it back, the fibers will tangle with the contacts, and when you pull it back, you will BEND the contacts. They are not easy to access and straighten, and you will end up replacing the whole card reader block for $40-$60. P.S. the contacts are gilded, so no need to clean them from oxidation. You need an extensive amount of dirt on the card to make them dirty enough to require cleaning.