HP 372284-001 - Manual (Page 19)

Installation
Performing a Cantilever Installation
1. Remove the eight screws, four on each side, from the switch.
2. Attach the 1U brackets to the switch, using six of the screws you removed, three on each
side.
3. Do one of the following:
— Install two clip nuts, one on each side of the rack.
2-6 HP 1x4 USB/PS2 KVM Switch User Guide