Currently Being ModeratedMar 10, 2013 9:09 AM (in response to Qat_)
Each of the two Ethernet channels is capable of running Gigabit (1000Base-T) speeds with jumbo (9000 Byte) frames.
If you have the appropriate Industrial Router with support for Link Aggregation Protocol, you can combine the channels into one aggregate link, but there are some shortcomings to this approach.
The Ethernet Hardware is soldered in on a non-adjustable Bus. Its speed cannot be changed.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers