Asus Pedestal/5U Rackmount Server TS500-E4 Server - Manual (Page 50)

Chapter 2: Hardware setup 2-28
2.9.3 SAS backplane connections
(in PX4 model only)
A SAS backplane comes pre-installed in the TS500-E4/PX4 model. The SAS
backplane has four 29-pin SAS connectors to support SAS hard disks. The
backplane design incorporates a hot swap feature to allow easy connection
or removal of SAS hard disks. The LEDs on the backplane connect to the
front panel LEDs to indicate HDD access, HDD failure, thermal failure, or fan
failure. See section “1.6 LED information.”
Front side
The front side of the SAS backplane faces the front panel when installed.
This side includes four SAS connectors for the hot swap drive trays.
HDD status LEDs
HDD activity LEDs
Disk drive 1
Disk drive 2
Disk drive 3
Disk drive 4