Dell External OEMR R710 Technical Manual page 35

Dell

Four external USB ports and one internal USB port

Power management interface (ACPI 3.0b compliant)

Platform Environmental Control Interface (PECI)

I/O interrupt controller

SMBus 2.0 controller

Low Pin Count (LPC) interface to Super I/O, Trusted Platform Module (TPM), and SPI-VU

Serial Peripheral Interface (SPI) support for up to two devices (R710 BIOS is connected to the
ICH9 using SPI)
PowerEdge R710 Technical Guide 35