Cisco Catalyst IR8140 Heavy Duty Series Hardware Installation Manual page 97

Installing Battery Backup Units
Note For technical specifications of the components described in this section, see
on page
There is a plug connector on the back and a socket connector on the front of each BBU. Also, there is a BBU
alignment pin on the back and an alignment hole on the front. When BBUs are plugged into each other, they
mate front to back. The plug connector engages with the socket connector, and the alignment pin with the
alignment hole. When you connect a second or third battery to a battery already installed, use the alignment
pin and hole to ensure correct battery position and align the battery connectors.
Figure 42: Rear of Battery Backup Unit
Item
1
2
3
90.
Description
BBU Alignment Pin
BBU Interface Plug
Captive screws (6) for installing the BBU for stacking or installing BBUs inside the
BBU bracket of the BBU module
Cisco Catalyst IR8140 Heavy Duty Series Router Hardware Installation Guide
BBU Components
BBU Technical Specifications,
81