Toshiba laptop with damaged ethernet port so picked up USBKR 100 USB10/100 eth to USB adapter and set up as eth1. Seems to work fine except I notice if I use an external drive , eth1 connection is lost during or after a large download or file transfer.
Wireless and eth0 work. ( I can hold the ethernet cable in the right position for a minute to check). Also other PCs stay connected to router.
Also I have deleted eth0 and still have same problem on eth1
Is this a case of software DHCP or DNS being confused or maybe the USB bus is confused about what device takes priority so shuts off connection? This seems repeateable but can't always remember to shut off eth1 then connect external device, then disconnect external device, then reconnect eth1.