The C6145's rear panel is where the action is. All rear-facing components are hot-swappable, including the twin 1023W power supplies and its upper and lower server nodes, each of which slides out in its 1U sled for service. At right notice each motherboard's built-in dual Gigabit Ethernet and console port. Not shown are dual USB 2.0 and VGA ports, as well as a third RJ-45 connector for out-of-band management. Also shared among the server nodes (and not shown) are a bank of fans, which Dell obviously did not select for their quietness. The noise from these fans is sure to stand out in your server room.