Are you still doing this?
Yes.
Does it work with other 3DS models? What about 2DS?
No.
Does it work with the Japanese (LL) model?
Yes.
What does the Type A / Type C option mean?
Choose the USB cable you want included with your order. They are pictured on the order page here.
Will you give me a shipping label? How does this work?
Return shipping is included in the cost when you order. You are still responsible for sending your console out, I don't provide a shipping label for that.
Any delivery service is ok to use (USPS, FedEx, UPS, DHL, etc.)
Is it ok to use with homebrew / hacked firmware?
Yes.
Will my games / data be lost?
No.
Can I use a USB to HDMI adapter?
No. It only has USB output to a PC. If you want HDMI, you can use the HDMI output from your PC, or if you want something more portable, you can try using a Raspberry Pi with cc3dsfs (read below).
Is there Mac / Linux support?
Not officially, you're on your own. There has been some work by 3rd parties.
Is there a warranty? What if it breaks?
I don't charge for repairs. If there is anything wrong with the capture board, you can always send it back to get it fixed / replaced.
If video output is flickering / unstable: