... Because of its SoC architecture with a "Bay Trail" is not (yet) compatible with ESXi (it seems that the integrated graphics card is not recognized by Esxi as I write this - versions 5.1 and 5.5). However no problem with XenServer when not using the usb ports for installation (requires a PS2 keyboard, and CD drive SATA) as the facilities from USB flash drives or USB drives cd consistently fail.
No problem with the mainstream OS (windows), however.