I've seen some questions about the USB's protective door

[ff22]

It opens by kind of pressing in the button and then sliding the door downward and then it flips open. But it is also removable. It can be popped off so that you can charge the camera while it is in the frame. You can also use the camera without a battery by attaching a charger or battery bank.

Here's some pictures

 

[mjbok]

I got a different frame that has a larger access hole so you can charge without removing the door.

 

[ff22]

You got this one:

Cage for DJI Osmo Action

Smallest and lightest way to mount your camera, Aluminum alloy offers perfect protection. Come with a 52mm UV Filter. You can also mount other filter lens or polarizing lens of diameter 52mm lens with this case. With Universal 1/4-inch screw hole and Clod Shoe Mount. Contains fine cut-outs for...

forevercam.net

I am trying to decide if I want to give up the standard "gopro" connector for the tripod hole. I know you can attach it but that means keeping track of it and its two screws (g)

I figured I might be able to dremel the original case's opening to allow the door to open.

 

[mjbok]

I actually got a different one.

Aluminum Frame Mount Standard Protector Housing Case for DJI Osmo Action Camera | eBay

Find many great new & used options and get the best deals for Aluminum Frame Mount Standard Protector Housing Case for DJI Osmo Action Camera at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[ff22]

I actually got a different one.

Aluminum Frame Mount Standard Protector Housing Case for DJI Osmo Action Camera | eBay

Find many great new & used options and get the best deals for Aluminum Frame Mount Standard Protector Housing Case for DJI Osmo Action Camera at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Link does not appear to work.

 

[mjbok]

Link does not appear to work.

I got it off ebay. If you search for Aluminum Frame Mount Standard Protector Housing Case Osmo Action you should find it. It is similar to the other one posted, but doesn't have the lens cover, it is truly just a shell.