Find the phone jack that is closest to the computer. This is where you will install your 2-for-1 adapter.
To install the 2-for-1 adapter and a filter:
- Disconnect the phone cord from the phone jack.
- Plug the 2-for-1 adapter into the phone jack.
- Plug the filter into one of the 2-for-1 adapter jacks.
- Plug the phone cord into the filter jack.
- Leave the other jack in the 2-for-1 adapter empty for now. When you connect your modem (later, in Step 2), you will insert the modem phone cord (without a filter) into the empty jack.

