Missing USB driver?

My (elderly) mother has recently switched to a different PC with Windows 7 (Dell I believe??) but the keyboard she has from her old (also had Windows 7) one will not work on that (no PS2 connection). She has a different keyboard (USB) that she is using now, but would prefer to be able to use her old one.
Figuring all she would need is a PS2 to USB adapter to get it hooked up, I purchased one (on-line) for her as a Christmas gift.
Tried to hook it up for her, but appears that the USB adapter isn't recognized? Could it be a driver missing? The adapter doesn't have any specific name/brand on it so I can't even look it up
This is the information listed as to what I purchased:
"This is a female to USB male adapter for PS2. Fast transmission and practical. Type: Female to Male Adapter for PS2 Material: PVC Suitable for: for PS2 Features: Female to Male, Fast Transmission".
Are there 'generic' drivers for this? If so, could I download this information from my laptop to a flash drive and then install it on hers?

 

Hi Vicki, New Year Greetings. No "generic" drivers are required, but some devices are not always USB suitable.
The keyboard your mum likes may not be USB compatible.
I experienced this when doing the exact job for my older brother a few years ago.

 

I'd be more than willing to get her a new keyboard, but like I stated, she preferred the feel of her old one.....doubtful she'd be able to find one that she'd still feel comfortable using.