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2-27ASUS TS300-E3/PA4 & PS4
2.9.3 SCSI backplane connections
(in PS4 model only)
A SCSI backplane comes pre-installed in the TS300-E3 PS4 model. The SCSI
backplane has four 68-pin SCSI connectors to support SCA SCSI hard disks. The
backplane design incorporates a hot swap feature to allow easy connection or
removal of SCSI 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 SCSI backplane faces the front panel when installed. This
side includes four SCSI 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