Dell POWEREDGE R610 - Manual (Page 33)

Dell
PowerEdge R610 Technical Guide 33

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 (R610 BIOS is connected to the
ICH9 using SPI)