its not as easy to reach the sd card slot since ive put my printers in enclosures so i got a bunch of sd card extension cables an most of them i just attached to the printers in convenient places but some i wasnt able to do that so i made this bracket so it can be mounted straight to the enclosures i made. u could still use it to mount to a aluminum extrusion with a couple t nuts but so far ive only used it by attaching it to the bases of the enclosures i built.