I have a couple dual connector drives. A 3.0 on one end, and then C (or micro) on the other. Sandisk I think, maybe Samsung. But I do understand those are somewhat bulky for an everyday carry Keychain item compared to what I’m picturing you’re asking for. It does seem stranger I’m not finding as many mouse dongle size C drives as I’d expect given how many there are for A
I also have a sd/micro SD adapter that has C on one end, and A on the other that can fold away to reveal a micro. That one is great for camera pic transfers. That one is vogek which I don’t expect to be a real company
I have this one and I use it exactly as you describe, when 2 card are connected it recognise them both as separate drives.
So I can backup my camera photos (SD card) to the micro SD card just using my phone via the USB C port. Then I can connect it to my desktop computer with the USB A end.
I have a couple dual connector drives. A 3.0 on one end, and then C (or micro) on the other. Sandisk I think, maybe Samsung. But I do understand those are somewhat bulky for an everyday carry Keychain item compared to what I’m picturing you’re asking for. It does seem stranger I’m not finding as many mouse dongle size C drives as I’d expect given how many there are for A
I also have a sd/micro SD adapter that has C on one end, and A on the other that can fold away to reveal a micro. That one is great for camera pic transfers. That one is vogek which I don’t expect to be a real company
Ooh I like the idea of the micro reader with a/c/micro! If I keep a card in it it can act as a thin drive and become multipurpose!
Edit: I did some AliExpress digging and found this thing that looks like a pretty sleek solution https://a.aliexpress.com/_mq2Ck8i
I have this one and I use it exactly as you describe, when 2 card are connected it recognise them both as separate drives.
So I can backup my camera photos (SD card) to the micro SD card just using my phone via the USB C port. Then I can connect it to my desktop computer with the USB A end.
Quite a nifty device
https://www.amazon.co.uk/UGREEN-Card-Reader-Memory-Adapter/dp/B07ZKRM12C