<P> The second generation Mac Pro has a redesigned configuration of ports . It has a HDMI 1.4 port, dual Gigabit Ethernet ports, six Thunderbolt 2 ports, four USB 3 ports, and combined digital Mini-TOSlink optical / analog 3.5 mm stereo mini jack for audio output . It also has a headphones mini jack (the two are distinctly selectable within the Sound System Preference panel, Output tab). There is no dedicated port for inputting audio . The system has a low - fidelity internal mono speaker . The Thunderbolt 2 ports support up to thirty - six Thunderbolt devices (six per port) and can concurrently support up to three 4K displays . This design requires two GPUs to support the seven display outputs (HDMI and six Thunderbolt). The I / O panel illuminates itself when the unit senses it has been moved to make it easier for the user to see the ports . Unlike the previous model, it has no FireWire 800 ports, dedicated digital audio in / out ports, a SuperDrive, DVI port, 3.5 - inch drive bays for replaceable storage drives, or changeable internal PCIe slots . Instead, there are six Thunderbolt 2 ports to connect high - speed external peripherals, including enclosures for internal PCIe cards . </P> <P> Apple's website mentions only RAM as user - serviceable, though third party tear - downs show nearly all components can be removed and replaced . A lock switch on the aluminum casing allows for easy access to the internals, as well as fitting a security lock with its own cable, and components are secured with standard screws . The flash storage and GPUs use proprietary connectors and are specially sized to fit into the enclosure . Unlike the rest of the Macintosh line the CPU is not soldered to the logic board and can be replaced with another LGA 2011 socket processor, including processor options not offered by Apple . The type of RAM modules that Apple supplies with the late - 2013 Mac Pro are either ECC unbuffered (UDIMM) on the up to 8 GB modules (shown on each module as PC3 - 14900E). The optional 16 GB modules are ECC registered (RDIMM) modules (shown on each module as PC3 - 14900R). The higher - capacity 32 GB modules that some third - party vendors offer are also RDIMM . The UDIMM and RDIMM module types cannot be mixed . Apple publishes recommended configurations to use . </P> <Table> <Tr> <Th> Model </Th> <Th> Late 2013 </Th> </Tr> <Tr> <Th> Component </Th> <Th> Intel Xeon E5 (Ivy Bridge) </Th> </Tr> <Tr> <Th> Release date </Th> <Td> December 19, 2013 </Td> </Tr> <Tr> <Th> Model numbers </Th> <Td> A1481 </Td> </Tr> <Tr> <Th> Model identifier </Th> <Td> MacPro6, 1 </Td> </Tr> <Tr> <Th> EFI mode </Th> <Td> EFI64 </Td> </Tr> <Tr> <Th> Kernel mode </Th> <Td> 64 - bit </Td> </Tr> <Tr> <Th> Chipset </Th> <Td> Intel C602J </Td> </Tr> <Tr> <Th> Processor </Th> <Td> One 3.7 GHz Quad - Core "Ivy Bridge - EP" Intel Xeon (E5 - 1620 v2) with 10 MB L3 cache or one 3.5 GHz 6 - Core "Ivy Bridge - EP" Intel Xeon (E5 - 1650 v2) with 12 MB L3 cache Optional one 3.0 GHz 8 - Core "Ivy Bridge - EP" Intel Xeon (E5 - 1680 v2) with 25 MB L3 cache or one 2.7 GHz 12 - Core "Ivy Bridge - EP" Intel Xeon (E5 - 2697 v2) with 30 MB L3 cache </Td> </Tr> <Tr> <Th> System bus </Th> <Td> DMI 2.0 or 2 × 8.0 GT / s (12 - core model only) </Td> </Tr> <Tr> <Th> Memory </Th> <Td> 12 GB (three 4 GB) for quad - core model or 16 GB (four 4 GB) for 6 - core model of DDR3 ECC at 1866 MHz (up to 60 GB / s) Expandable to 64 GB (four 16 GB) from Apple, expandable to 128 GB using third - party 1600 MHz modules . </Td> </Tr> <Tr> <Th> Graphics </Th> <Td> Dual AMD FirePro D300 with 2 GB of GDDR5 VRAM each for quad - core model or Dual AMD FirePro D500 with 3 GB of GDDR5 VRAM each for 6 - core model Optional Dual AMD FirePro D700 with 6 GB of GDDR5 VRAM each </Td> </Tr> <Tr> <Th> Secondary storage </Th> <Td> 256 GB flash storage Optional 512 GB or 1 TB flash storage </Td> </Tr> <Tr> <Td_colspan="1"> PCIe SSD </Td> </Tr> <Tr> <Th> Connectivity </Th> <Td> AirPort Extreme 802.11 a / b / g / n / ac (up to 1.3 Gbit / s) 2x Gigabit Ethernet Bluetooth 4.0 </Td> </Tr> <Tr> <Th> Peripherals </Th> <Td> 4x USB 3.0 Built - in mono speaker 6x Thunderbolt 2 Audio output / optical digital audio output Headphone mini-jack </Td> </Tr> <Tr> <Th> Video out </Th> <Td> HDMI 1.4 and Thunderbolt 2 </Td> </Tr> </Table> <Tr> <Th> Model </Th> <Th> Late 2013 </Th> </Tr>

What is the motherboard in a mac pro
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