We went with Vmware,so that as they have to change hardware dueto life-cycle replacement, the virtualized hardware seen by the OS and applications never changes.
Either Vmware's or Microsoft's products should provide as consistent a virtualized environment as can be had today. Certainly less painful than moving the existing software environment to a new machine.
Looking closely at the top and side pictures, I can identify PS/2 Keyboard/Mouse connectors, a serial port, and a metal can that seems to hold 2 USB ports and maybe a firewire port (the top connector-Not an RJ-45).
Next to the can is where a dual Ethernet (standard on most server MBs) connector would go. Nothing there.
Are they using USB/firewire for communications or add-in boards (maybe Ethernet or Infiniband)? Or maybe it's a Zen thing...