Dell PowerEdge R815 Technical Manual page 33

Dell
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Serial ATA (SATA) ports with transfer rates up to 300 MB/s (PowerEdge R815 supports one
SATA port for optical devices)
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Five OHCI (full-speed 1.1) and two EHCI (high-speed 2.0) USB host controllers, with up to 12
USB general purpose ports and 2 USB embedded ports (PowerEdge R815 uses six of these ports
for internal and external use from the general purpose ports)
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Power management interface (ACPI 3.0b compliant)
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Integrated Micro Controller (IMC) and thermal management (the iDRAC interfaces the
Hardware Thermal Control (HTC) on PowerEdge R815)
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I/O interrupt controller
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SMBus 2.0 controller
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Low Pin Count (LPC) interface to Super I/O, Trusted Platform Module (TPM),
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Serial Peripheral Interface (SPI) support for up to two devices (4MB BIOS flash is connected to
the SP5100 using SPI interface)
PowerEdge R815 Technical Guide
and SPI-VU
33