Dell PowerEdge M710HD Technical Guide - Page 26

Dell Table 8. M710HD PCIe Assignments Port Number Port 0 Port 1-2 Port 3 Port 4 IOH Port 5-6 M710HD ESI H200 NDC connection Not Used Port 7-8 FAB B Port 9-10 FAB C ICH9 x4 Port 1-4 x1 Port 5 x1 Port 6 Unused Unused Unused 8.5 Intel I/O Controller Hub 9 The Intel I/O Controller Hub 9 (ICH9) is a highly integrated I/O controller supporting the following functions:  Six x1 PCIe Gen1 ports with the capability of combining ports 1-4 as a x4 link  PCI Bus 32-bit Interface Rev 2.3 running at 33MT/s  Serial ATA (SATA) ports with transfer rates up to 300MB/s (M710HD does not support SATA)  Six UHCI and two EHCI (high-speed 2.0) USB host controllers with up to 12 USB ports (M710HD uses three of these ports for internal and external use)  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 Trusted Platform Module (TPM) and SPI-VU  Serial Peripheral Interface (SPI) support for up to two devices 8.6 PCIe Gen2 PCIe is a serial point‐to‐point interconnect for I/O devices. PCIe Gen2 doubles the signaling bit rate of each lane from 2.5 Gb/s to 5 Gb/s. Each of the PCIe Gen2 ports is backwards‐compatible with Gen1 transfer rates. 8.7 Direct Media Interface The Direct Media Interface (DMI) connects the Boxboro‐EX Legacy IOH with the Intel I/O Controller Hub (ICH). The DMI is equivalent to a x4 PCIe Gen1 link with a transfer rate of 1 GB/s in each direction. 8.8 PCIe Mezzanine Connectors The M710HD supports two x8 PCIe Gen2 mezzanine connectors. PowerEdge M710HD Technical Guide 26