Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 76)

Controls, Indicators, and Connectors
ATCA-7470 Installation and Use (6806800P15K) 76
 Geographic address signals (HAx)
 Ground signals (SHELF_GND and GND)
 Reserved signals
Zone 2 contains the two connectors P20 and P23. They carry the following types of signals:
 Telecom clock signals (CLKx_)
 Base interface signals (BASE_)
 SAS update channel
 100Base-BX update channel
Figure 3-8 P10 Backplane Connector Pinout