Not sure if you’re naming an adapter, or badly trying to coerce a cat to come closer.

PS2 -> serial seems correct, iirc their were serial mice.

0 since it's connected to a PS/2.

Probably 0.

It wouldn't work, at all.

You've got USB to db9 serial, to db25 female, back down to db9 serial. At this point, since the chain started life as a USB to serial adapter, this should be a functional serial port.

But then, it gets converted to PS/2 mouse. Then to AT keyboard, then back to PS/2 mouse, before becoming a USB port again.

That's not how it works.

You see, he should have just plugged the dongle directly into the usb port on the laptop.

There will always be a special place in my heart for serial, where I can just jam in a paperclip and "guess around" with a voltimeter till I figure it out.

I was going to say, that's a lot of middle men to plug a USB drive into a USB port...

That's a lot of adapters to get from USB to USB. There's probably a metaphor in there somewhere.

What's the adapter between the 9 to 25 pin and 25 to 9 pin serial adapters? Looks more substantial than a typical gender changer, maybe one of those dip switch adapters upside down?

I was going to say...

What is not pictured is the USB storage being recognized.

That USB to serial might have some diodes in it, preventing a magic smoke release. But after all the decades, the funny thing is the ground pins still go to ground.

It would appear so 😄

No, it's a flash drive, apples are redder, and round.