Yes, if the power supply of the external HD is guaranteed. This means that it needs its own power supply.

The Lightning to USB Camera Adapter is compatible with iPad models that have Lightning support and run iOS 9.2 or later. Since the iPad Air (5th generation) uses a Lightning connector and supports the required iOS version, it is compatible with this adapter.

I do not think

It's a USB 2.

Unfortunately not, this product is only meant to transfer pictures and videos from your camera to your IPad.

Physically the connection can be made, but as far as I know the iPad does not support printer drivers other than AirPrint, so it is wireless. In my opinion it will not work

Since I don't have the same equipment, I can only give a limited answer. I tested it with an iPhone 11 and Logitech G935. You can listen to music, but I can't say whether the microphone works. I couldn't make a phone call because I couldn't switch to the headphones, only the normal hands-free system worked. A Jabra with a cable didn't work either because it draws more current than the adapter allows. What works in terms of microphone is, for example, the S6D uTestMic. This is a calibrated USB microphone that can be operated with this adapter. It has a microphone and a headphone output at the same time. But it's not meant for making phone calls. I don't know if all this will help you. You probably have to try it out.

No, the iPhone does not provide enough power for external devices. This adapter is actually unusable.

No. Apple is very cagey about this. You can only use the adapter to download photos/videos from a camera. It's best to use a headset with Bluetooth.

Yes, that should work. Take a look at this video: https://www.youtube.com/watch?v=TDJn1sBv6pM

Not in my opinion, but I have never tried it. In any case, Apple doesn't even allow photos to be downloaded to the iPhone. It only worked for me with the iPad.

Den neuen Adapter finden Sie nun hier: Apple Lightning auf USB 3 Kamera-Adapter (Weiss, Lightning - USB)

hi philip. i don't have an iphone 11 but an xs max. my experience is that the iphone and ipad pro, for example, don't accept foreign input via usb. For example, I can't import photos from my Sony A7RIII into the iphone or ipad pro. This is due to the cam's data format (RAW). I assume that the data format (output) is not understood by the controller of the iphone. You have to ask the HP of asto c40 about it ! Greetings Christian

ehmmm hallo?! wieso fragst du nich einfach apple - http://www.apple.com/ch-de/shop/product/MD821ZM/A/lightning-auf-usb-kamera-adapter?fnode=a7d5e400994fbb5d4c12a65f9fee22f89f8ec923c3582464f93729a9197aab3c2a2f824d9df0c119f60f37af746f11a892a36d0b5f787cbf6b83d860b991a4854e64740c189f8798d0196ce678cfc02a5941e357d3ad1d1062693b09adf94b26a44a8303fbb0ab9767587fa786e8c74d&fs=f%3Dadapter%26fh%3D47a7%252B45b0