When deploying your Synology Wi-Fi system, you need to consider the following two factors to achieve the best connection:

• Deployment of Wi-Fi points.¹
• Connection types of a Wi-Fi system.

To place your Wi-Fi points in suitable locations:

• In an apartment: Keep the distance between the primary and additional Wi-Fi points to a maximum of two walls apart.
  
• In a two-story house: Place the primary and additional Wi-Fi points on different floors and near the stairs.
  
• In a three-story house (3 stories or 2 stories + 1 basement): Place the primary Wi-Fi point on the middle floor, and one additional Wi-Fi point on each of the other floor. Keep the devices as close as possible to the stairs.
  

To connect your Wi-Fi points in a way that optimizes connectivity:

Connection types are also a crucial factor determining whether your mesh Wi-Fi system can achieve the best connection. The following are four conditions of connecting Wi-Fi points with multi-floor coverage.

• Connect all Wi-Fi points using Ethernet cables (Topology 1): Correct. When a Wi-Fi system is deployed through a wired connection, the primary Wi-Fi point’s location doesn’t affect the transmission rate of the Wi-Fi system. Thus, you can place it on any floor.
  
• Connect all Wi-Fi points wirelessly with the primary Wi-Fi point placed on the middle floor (Topology 2): Correct. When a Wi-Fi system is deployed through a wireless connection, the Wi-Fi point at the end of the connection has a slower speed than any other point in the system because it is the farthest from the primary Wi-Fi point. Thus, we recommend placing the primary Wi-Fi point on the middle floor if you wish to connect all Wi-Fi points wirelessly.
  
• Connect all Wi-Fi points wirelessly with the primary Wi-Fi point placed on the first floor (Topology 3): Not recommended. The Wi-Fi point on the fourth floor may not have normal speed because the deployment makes it far from the primary Wi-Fi point.
  
• Place the primary Wi-Fi point on the first floor, connect it to the Wi-Fi point on the second floor wirelessly, and wire the Wi-Fi points on the second, third, and fourth floors in series (Topology 4): Incorrect. In an Ethernet backhaul environment, the primary and additional Wi-Fi points must be connected using Ethernet cables, and only the point at the end of the connection can be connected wirelessly.
  

Other factors to consider:

• Keep the front side of the Wi-Fi points clear.
• Keep the Wi-Fi points away from metal objects.
• Do not place the Wi-Fi points in the corner.

Wired connections are supported by Synology Wi-Fi systems after the initial installation is complete.

You can monitor transmission speeds in SRM by going to Wi-Fi Connect > Wi-Fi point. Alternatively, you can run a network performance test with tools such as “Speedtest” or “Opensignal” on your client device.