PCIe2-2711 PCI Express Gen2 Expansion System User’s Manual
3-1
Revision 1.1, October 2017
CHAPTER 3
EXPANSION CHASSIS
3.1
PCIE2-2711 CHASSIS
The PCIe-460 Expansion Backplane is installed into a 20-slot rack-mountable chassis. Depending on
the power supply configuration, the chassis is either 4U (1200W single supply), or 5U (2180W or
3240W, N+1 redundant supply). The chassis also contains multiple drive bays that may be used to
install peripheral devices for specific applications.
3.2
SEATING OF CARDS
Unlike standard PC applications, the PCIe2-2711 Expansion Systems has a narrow lower gate that
precisely engages the lower end of the PCI Express Add-In board’s face panel. The purpose is to ensure
correct electrical connector mating of up-plugged boards. Failure to accurately mate the lower end of
the face panel with the chassis lower gate will lead to the board not being recognized by the host.
Table 3-1. Slot Capabilities
All eight slots of the PCIe-460 have x16 connectors and have the full x16 lane connection to the switch.
All slots will support a double width PCIe add-in card such as a graphics board or GPU with a heat sink.
Slots J9, J10 and J19 use PCIe slot connectors but have proprietary pinouts and are not for general
purpose use. Slots J10 and J19 are for the Upstream Cable Adaptor, slot J9 is for the optional System
Monitor board. Only Cyclone Microsystems Upstream Cable Adaptors and System Monitor boards
should be installed in slots J10, J19 and J9 respectively. Table 3-1 summarizes the slot capabilities.
Slot
Connector
Lanes
Width
J2
x16 connector
x16 lanes
double
J4
x16 connector
x16 lanes
double
J6
x16 connector
x16 lanes
double
J8
x16 connector
x16 lanes
double
J9
x1 connector
Monitor Slot
single
J10
x16 connector
Upstream Cable Slot
single
J12
x16 connector
x16 lanes
double
J14
x16 connector
x16 lanes
double
J16
x16 connector
x16 lanes
double
J18
x16 connector
x16 lanes
double
J19
x16 connector
Upstream Cable Slot
single
