HP Integrity rx4640 Server - Manual (Page 5)

5
Hardware features
In this section
Board components .......................................................................................................................... 5
Controller specifications................................................................................................................. 6
Board components
Item ID Description
1* SAS port 1E (external, shared), 4x wide
2 Controller health LED (blinking green indicates board is OK,
amber indicates board has failed)
3 I/O activity LED (indicates total activity of all ports)
4* SAS port 1I (internal, shared), 4x wide
5 SAS port 2I (internal, dedicated), 4x wide
6 Cache module (also known as BBWC or array accelerator)
7 Secondary (lower) battery for cache module