Placing XTX™ into an existing ETX® design allows the customer to expand their applications to the newest technologies available such as PCI Express™ and Serial ATA. XTX™ is 100% backwards compatible to the ETX® standard (Rev. 2.7) if the ISA bus is not required. The ISA bus can be implemented through the use of a PCI-ISA bridge on the customer specific baseboard. As an alternative to this the customer can use the readily available XTX™ LPC bus offered on the congatec board. Most customer specific baseboards will not require a redesign in order to use congatec's XTX™ board. The additional XTX™ signals do not affect the onboard ISA functions. Complete re-usability of the existing mechanical design.