noun
access point; connection destination
Technical term used in networking and telecommunications to refer to the endpoint or destination of a connection, such as a server, device, or network node.
Wi-Fiの接続先を選択してください。
Please select the Wi-Fi access point.
VPNの接続先を設定する必要が
You need to configure the VPN connection destination.
Refers specifically to the address of the connection destination, while 接続先 is the destination itself.
Compound of 接続 (connection) and 先 (destination, ahead). A straightforward modern technical term.