Rear panel

1. Serial Port Female DB-9 panel connector, which provides RS-232 communications for external control protocols.

   Note: On earlier units, this connector is on the front panel.

2. Power Receptacle Flush-mount IEC power receptacle for connecting a compatible IEC power cable (included).

   Use only the supplied cable or an equivalent international version.

3. Module Bays Housing bays for NION series expansion cards. Up to 4 Nio series I/O cards can be installed.
4. Power Supply Industrial ATX format power supply with exhaust fan.

   Additional air flow is provided on the side panel opposite the power supply. Install with at least 2” of free clearance on sides of unit. Do not block any air intake or exhaust vent.

5. XDAB In/Out RJ-45 connectors accept shielded CAT6 data cables for proprietary NION interconnect system.
6. GPIO Female DB-25 panel connector provides access to the internal GPIO control functionality.
7. LAN RJ-45 panel connector accepts a CAT5 data cable for data transport to/from the internal network interface. This connection is required on all units for system configuration and inter-unit communications.
8. RS-485/422 Female DB-9 panel connector accepts a standard DB-9 connector (not included) to provide access to the external RS-485 or RS-422 external control protocols.
9. CobraNet network I/O ports Two RJ-45 connectors providing a primary and secondary interface to the CobraNet network. One connection is required to pass audio to or from the device. The second connection provides redundancy.

   Note: The secondary port does not provide additional network capacity and only becomes active in the event that the network connected to the primary port becomes inoperative.