[Voxata]

has the blue usb cable something particular or can it be replace by a normal usb cable ?

I had a Amazon USB cable that worked well - also Ifi is REALLY responsive on requests to replace USB cables if you want to get an official one. Big thing you want to be sure of is that it fits in the socket without issue, some aftermarket cables are thick walled.

 

[boodado]

Nothing special - as @Voxata indicated. I picked one up from Amazon as well - works perfect.

Hagibis USB Extension Cable USB 3.0 High Speed Extender Cord Male to Female Data Transfer​

 

[Sebastien Chiu]

has the blue usb cable something particular or can it be replace by a normal usb cable ?

You can replace it with any USB cable with the correct connections.