@Clive_A Oh - my bad. But this is what I get when I click on the "Unsuported browser..." in the Troubleshooting! That's bad! My browser is really "Unsuported"!

I tried to setup a GRE VPN but it requires an IP Address. Not for me. Both my locations are DHCP clients from the ISP!

@Clive_A the link indicated by the red arrow is unclickable. Where is that trobleshooting link?

Update: Actually, this is what happened: 1) I reset my ER605 V2 in my lab to wipe out the current config then I plugged in the USB flash drive and it did scanned the Sandisk Cruzer as a Storage...

Just to let you know, I disabled the forcing of HTTP to HTTPS! Now, using Firefox, I get an "Unsuported browser! Please update or use a different browser.". BUT it connects me to the management...

@firefox111 Aha!!! It recognized my old 16-GB Sandisk Cruzer. The first one I tried was a brand new 158-GB PNY flash drive. So what is the limitation of the USB Storage port?