Cisco Nexus 9396PX Hardware Installation Manual page 14

Overview
3 Two power supply modules (AC power supply shown)
Power supply slots are numbered 1 on the left and 2 on the right
(as seen when looking at the power supplies).
4 Three fan modules (two used for operations and one used for
redundancy) of the following types:
Note
Fan slots are numbered 1 (leftmost slot) to 3 (rightmost slot).
Cisco Nexus 9396PX NX-OS-Mode Switch Hardware Installation Guide
4
Earlier shipments of the switch were made with the
N9K-C9300-FAN1-B or N9K-C9300-FAN1 fans.
Overview
7 Screw holes (2) for attaching a
front-mount bracket for four-post
racks (one bracket on each of two
sides).