Just tried out Dell #2. The CD-ROM drive is bad and it's missing the PCI card cage. Other than that it can boot into DSL as well. Again I'm posting from it.

Both have low-profile ATI Rage128 AGP video cards. The primary IDE controller still needs to be tested on both of them. Unfortunately when the drives were pulled the rails went along with them.

Since I had all of these P4 parts I tried to see if the Shuttle case I picked up in the hall downstairs a few weeks ago worked. Sadly, it was DOA. At least there was a small power to scavenge from it.