ChassisThe PXI chassis is the backbone of your PXI system. It provides the power, cooling, and communication buses of PCI and PCI Express for your PXI controller and modules. PXI chassis are available in a variety of configurations including various slot configurations, power capabilities, and mechanical configurations. They also offer a range of I/O module slot types, integrated peripherals such as LCD displays, and more. Below are some of the key aspects of a chassis.