kathy writes:

Can I pick your brains about a hard drive upgrade.

I have an old desktop PC with a 250 MB hard drive. I would like to
increase the storage capacity and think 500 MB may be enough.

The new drive will replace the old one.

I notice that 500 MB is a size which I can now buy in 2.5 inch format.
Is a 2.5 inch drive likely to be better (faster, lower power
consumption, etc) than a 3.5 inch drive? Are the connectors the same?

Or would it be better to install another 3.5 inch drive?

Thank you for any advice.

Do you really mean MB? You're talking about drives that are, by today's
standards, absolutely microscopic. Multi-terabyte drives are available
for under $100. Checking.... directron.com has a 20GB drive (tiny by
today's standards, huge in comparison to the drives you're talking
about) for $10.99.