previously connected divices

[ahbl]

can i look at previously connected computers or devices after they have dissconected 

[TheEther · Accepted solution]

They should be listed for a short while in the Attached Devices page as well as the logs on the router itself.  

[TheEther · Accepted solution]

They should be listed for a short while in the Attached Devices page as well as the logs on the router itself.