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2.5" SATA SSD to Desktop computer

I have an old desktop computer that I would want to upgrade to an SSD. It has only old IDE and a PCI SCSI adapter. The workhorse is a SCSI HDD which already has 10 years of uptime, and I'm a bit concerned although its SMART is still clean.

If I would buy a PCI SATA board, could I connect it to a 2.5" SSD and how? Is there anything special about PCI SATA adapters to be connectable to 2.5" and not only 3.5"?
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Scott C
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weifai

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Thank you!
Anytime.  Glad I could help.
FYI - there are some caveats you did not ask about.  SATA-attached SSDs can be 3, 6, or 12Gbit/sec interfaces.   So make sure your SATA controller supports the maximum SATA interface speed of the SSD.

But the big problem is that not all SSDs are created equal.   In order to get decent speed you have to do aligned I/O in multiples of the native block size.   If you do not performance could be worse than a mechanical drive.    Not all operating systems can do this.  As this is an ancient computer, I'll go out on a limb and guess it is an ancient O/S that can't deal with 4K I/O size.  One thing for sure, it won't reformat your data to optimize it.  If your SSD only supports native 4K I/O then your O/S may not even work with it at all.

So with that in mind, be sure to get a SSD that handles 512byte block sizes and unaligned I/O.  Check the specs, otherwise at worst case, you may end up taking it back.