@Tony Does the A20 version of this router have the same issue? I am still within the window to return the C4000 and purchase an A20. Dennis

@Tony The original USB 2.0 drive that worked perfectly in the Archer C5 was formatted in FAT32. I have since tried a USB 3.0 drive formated in exFAT and had the same problem. I formatted the original...

@Babulal Make certain there are no space characters within the devices' description. "Dell Laptop" won't work, but "Dell_Laptop" is fine. Dennis

I moved the USB stick from my Archer C5 to a C4000 after upgrading. I can see the files on the USB, mostly MS office Excel or doc files, but accessing them is incredibly slow. Sometimes when I open a...

@Tony Yes, even one entry, like "Dell Laptop" kills the C4000's DHCP, 100%. "Dell_Laptop" isn't a problem. It would be great if the installation instructions carried that warning. Better yet, include...

@Den24601 Before posting, I did a couple of searches on "Address Reservation" but didn't find anything. A few minutes ago, this popped up: https://community.tp-link.com/us/home/forum/topic/110679...