The placement of a modem can vary depending on different factors, but generally, there are a few considerations when choosing a suitable location for your modem:

1. Central location: Preferably place your modem in a central location in your home so the Wi-Fi signal can distribute evenly throughout the house. This helps ensure good coverage in all rooms.

2. Avoid obstacles: Make sure the modem is not placed behind thick walls, furniture, or other obstacles that can weaken the Wi-Fi signal. The freer the space around the modem, the better the signal quality will be.

3. Avoid interference: Do not place the modem near other electronic devices that can cause radio waves, such as microwaves, cordless phones, or baby monitors. These devices can cause interference and affect Wi-Fi performance.

4. Good ventilation: Ensure the modem has sufficient ventilation to prevent overheating. Do not place the modem in an enclosed space or directly next to other heat-producing devices.

5. Proximity to connections: Place the modem near the connections where the internet comes in, such as the phone connection or fiber optic connection. This facilitates installation and ensures a reliable connection.

It can also help to place the modem in an elevated position, such as on a shelf or a desk, instead of directly on the floor. This can improve signal strength and reduce interference.

Every home is unique, so you may need to do some experimenting and testing to find the best location for your modem. You can check the signal strength and speed at different spots in your house to determine where the performance is best.

If in doubt, you can also ask advice from your internet provider or a professional installer to help in choosing the best location for your modem, taking into account the specific characteristics of your home and your internet needs.