Can't say if it is defective or not but I had a similar situation after I first got my C5400 v2. I would try the following (assuming you haven't already done so) and see if it helps. . . . 1. ensure...

junmiron wrote @ gandalf1369 are you sure you are using Windows 10 with the latest April update? because everything was working before that and it was still possible to add SMBv1, but after April...

I have the same router (C5400 v.2) running the most latest firmware (1.2.2 Build 20170912 rel.56240(5553)). The drive I have attached to the USB port on the router functions as it should - I can see...

Addonics wrote Model : Hardware Version : Firmware Version : ISP : Region : MalaysiaModel : Archer C5400 V2Hardware Version : ArcherC5400 v2.0Firmware Version : Archer C7_V2_150427ISP : TM UnifiThe...

Haris wrote Yes, the tested devices are compatible for 5Ghz band (having a/ac). The problem with TP-Link Archer C5400 is that it does not support 5GHz channels above 150 for Android devices.. I have...

mikolajek wrote Model : Archer C3150Hardware Version : v1Firmware Version : 0.9.1 0.1 v005f.0 Build 160328 Rel.39325n ISP : UPC PolandI've set a nice DHCP reservation table on my Archer C3150 to...