Example Of Mounting On A Vertical Rail; Din Clip Kit - Enterasys I Series Hardware Installation Manual

Mounting the Switch
Figure 2-11
The DIN clip kit consists of the two clips, each with four screws and a latch with a captive screw as
shown in
only one clip if installing to the bottom of the switch.
Figure 2-12
1 Latch
2-16 Installation

Example of Mounting on a Vertical Rail

Figure 2-12 on page 2-16. You need both clips if installing to the back of the switch, but

DIN Clip Kit

2 Base rail clip 3 Screws