Ultra 10

TThe Ultra 5 and Ultra 10 were the first Sun computers to adopt a more PC-like architecture. Both feature a PCI bus and IDE controllers for the hard disk and CD-ROM instead of SCSI. They still use Sun's proprietary keyboard interface unlike the later SunBlade series.

This Ultra 10 is well-equipped with a 333 MHz UltraSPARC IIi, 256MB of RAM, an 80GB IDE hard disk, a SCSI controller, Creator 3D graphics, and a SunPCI card.

Sun PCi

The SunPCI was Sun's solution for businesses that still needed to run Windows software. It's essentially a single-board computer on a PCI card, with software that passes I/O to Solaris. When launched, it functions similarly to a virtual machine—you'll see the SunPCI boot like a normal PC. The SunPCI hard disk is an image file stored on the Solaris file system, which can be moved like any other file.

The SunPCI also has dedicated video output, keyboard, USB, and Ethernet ports, allowing it to be used as a standalone computer if needed.

I haven't been able to get the SunPCI working properly on my system. Either I'm missing patches, or I'm using an incompatible version of Solaris. Eventually, I plan to try installing Solaris 9 to see if that improves compatibility.
NCommander made an in-depth video about the SunPCI here: Video