
Original Pentium III era hardware. Sent to a friend.

Case gutted.

Side panel which pops off with a push of a button on the front bezel.

Proprietary rear.

This needs some work if we're gonna convert it to ATX

Flattened/removed these little metal tabs

These clips hooked onto the old motherboard which used a non-standard layout.

The rear will have to be modified.

Actually, let's just cut it.

Cut out most of the rear.

Didn't want to cut off the very top of the rear end. Still, the case needs more work...

That is where this cheap donor ATX case comes into play.

Slice it in half.

Other side of case

Will preserve the back end as well so we can reuse it in the Optiplex

Cut off wheels are our friends.

Was really easy to slice through this one. Cutting the Optiplex was much more work since the steel wasn't paper thin.

Retrobrighted the case and painted a 5.25" USB 3.0 front panel ... slightly off but it's hard to find exact matching spray paints.
Dell Optiplex GX110 case
Corsair 750W power supply (cheapest name-brand power supply I found at microcenter at the time)
MSI Z270-A Pro ATX motherboard
32GB DDR4 3200 RAM (2x16GB)
MSI Armor RADEON RX580 8GB PCIe video card
Teac beige DVDRW drive
5.25 USB 3.0 front panel
Samsung 970 EVO 512GB NVMe SSD
Seagate 2TB 7200RPM HD
Windows 10

Left it in the sun a bit too long, some slight streaking is noticeable but only if you really look up close.

My motherboard's I/O shield is unfortunately missing... but did keep the original Dell PCI brackets.

The guts! Tidied up the wires in the 5.25 drive bays.

Lower part of the machine... the front panel is proprietary and was a pain to wire up. I don't have the HD LED working but everything else works fine (power LED, power + reset buttons).

That floppy drive is not hooked up to anything.

Here it sits in all its glory!

Speccy

Windows 10 system properties

Desktop
HP Z420 Workstation Intel Xeon E5-1620, 32GB, RADEON HD7850 2GB, SSD + HD, XP/7
