HighPoint RocketRAID 4310 - Manual (Page 11)

Hardware – Description and Installation
11
J3 (BBU connector)
Connector for HPTBBU-03 (HighPoint Battery Backup Unit 03,optional part,sold
separately—see “Battery Backup” for details).
BEEP1 – Speaker
Alarm (speaker): the speaker emits an audible alarm in the case of disk/array failure.
J4 - Ethernet Port (RocketRAID 4321)
Ethernet port for Out of Bound Management, support Net Time Protocol.
Cable – Internal Mini-SAS to Mini-SAS
The RocketRAID 4310/4321 includes 1 Internal Mini-SAS to Mini-SAS cables.