Intel Desktop Board DB85FL Technical Product Specification
24
1.5.3
SATA Interfaces
The board provides six SATA connectors, through the PCH, which support one device
each:
•
Four SATA 6.0 Gb/s interfaces through the Intel B85 Express Chipset with SATA
ACHI support (blue)
•
Two SATA 3.0 Gb/s interfaces through the Intel B85 Express Chipset with SATA
ACHI support (black)
The PCH provides independent SATA ports with a theoretical maximum transfer rate of
6.0 Gb/s for four ports and 3.0 Gb/s for two ports. A point-to-point interface is used
for host-to-device connections.
The PCH supports the Serial ATA Specification, Revision 3.0. The PCH also supports
several optional sections of the Serial ATA II: Extensions to Serial ATA 1.0
Specification, Revision 1.0 (AHCI support is required for some elements).
For more information, see:
http://www.serialata.org/
.
For information about
Refer to
The location of the SATA connectors
Figure 9, page 42
1.5.3.1
Intel
®
Rapid Storage Technology
The PCH supports Intel
®
Rapid Storage Technology, providing AHCI functionality.
1.6
Real-Time Clock Subsystem
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When
the computer is not plugged into a wall socket, the battery has an estimated life of
three years. When the computer is plugged in, the standby current from the power
supply extends the life of the battery. The clock is accurate to
±
13 minutes/year at
25 ºC with 3.3 V
STBY
applied via the power supply 5 V
STBY
rail.
NOTE
If the battery and AC power fail, date and time values will be reset and the user will be
notified during the Power-On Self-Test (POST).
When the voltage drops below a certain level, the BIOS Setup program settings stored
in CMOS RAM (for example, the date and time) might not be accurate. Replace the
battery with an equivalent one. Figure 1 on page 13 shows the location of the battery.
