If there is LAN connectivity, the devices should already be connected. In this case, PAN (Personal Area Network) would be a viable alternative to interconnect the devices. PAN is a type of network used for communicating between devices in close proximity to one another, typically within the range of a few meters. It can be established using wireless technologies such as Bluetooth or Wi-Fi Direct, which would allow the technician to connect their tablet, smartphone, and laptop and troubleshoot the switch more effectively.