Prusa MK4 USB Extension Holder for 3030 Extrusions AND MY RED DOTS

I love my new Prusa MK4.  But I don't like the way the USB stick plugs in.  It's a bit tight, and I wish to preserve the connector's longevity.

So I bought a short extension cable and made a mount for it.  Not only will it preserve the printer's USB slot, but it makes the memory stick easier to plug in, straight instead of sideways.

90° Short USB Extension 0.2M Type A Male to A Female Down

https://www.amazon.com/gp/product/B0BYN8M2TM

Be sure to get the “down” facing connector.

This is a super easy print, no supports, and use virtually any settings.  It assembles with an M3 screw, anywhere from 3mm - 10mm length.  I used an M3x4mm.  And the USB is held into the mount with a small zip tie.

And thanks to @Lewisdan1_282381 for a beautifully designed T-Nut.  You'll need one to attach the holder to the frame.

https://www.printables.com/model/567411-improved-twist-in-t-nut-for-a-3mm-screw-for-use-wi

What about those red dots?

Ever since USB came out (1996) I noticed we had to look at the inside of the connector to get the right “polarity.”  And what happens?  We look, and still have to turn it over.  But it is SO much easier to match the indicator on the outside than the inside.  Now you can get it right every time, without having to flip it around.  I've applied a dot of bright nail polish on every USB I have since that date.

• Be sure to dot as close to the far end as possible (away from the cable), so you don't cover it with your thumb.  But not on the actual part that slides into the female, it will wear off.
• Dot the FEMALE on the side with the internal tongue.
• Dot the MALE on the side the tongue goes into.  

Every mouse cable, USB stick, extension and whatever, will be a pleasure to plug in.

Happy Printing!