Four-Post Rack Mount Installation

The rack mount option kit supports the flush mount configuration for a four-post rack installation, with the option of recessing the chassis a maximum of 3.8 cm (1.5 in.). Both airflow directions are supported.

Four Post Rack Supported Configurations displays the four-post rack flush mount configuration for both airflow directions. The recessed chassis configurations (configured when installing the adapter plates, see Installing the Adapter Plates) are not displayed.

1 = Flush mount, switch I/O port side to power supply side airflow	4 = Hot air exhaust side
2 = Flush mount, power supply side to switch I/O port side airflow	5 = Airflow direction
3 = Cool air intake side

This section details the installation of the optional rack mount kit for a four-post rack and covers installing:

• The rack mount rail and extension assembly to the rack.
• The SSA to the rack mount rail and extension assembly.

The optional rack mount kit contains two pre-assembled rack mount rails with attached extensions. The length of each assembly is adjustable from 56 to 81 cm (22 to 30 in.). Each assembly is labeled either “right front” or “left front”. The front of the rack is always the cool air intake side. The rear of the rack is always the hot air exhaust side.