170 IBM eX5 Implementation Guide Serial Over LAN (SOL) Active Energy Manager Power/Reset control (power on, hard/soft shutdown, hard/soft reset, and schedule powercontrol)4.11.2 Ethernet subsystemThe x3690 X5 has an embedded dual 10/100/1000 Ethernet controller. The BCM5709C is asingle-chip, high performance, multi-speed dual port Ethernet LAN controller. It contains twostandard IEEE 802.3 Ethernet media access controls (MACs), which can operate in eitherfull-duplex or half-duplex mode. Two direct memory access (DMA) engines maximize busthroughput and minimize CPU overhead.The system has the following features: TCP off-load engine (TOE) acceleration Shared PCIE interface across two internal Peripheral Component Interconnect (PCI)functions with separate configuration space Integrated dual 10/100/1000 MAC and PHY devices able to share the bus throughbridge-less arbitration Comprehensive nonvolatile memory interface IPMI-enabled4.11.3 USB subsystemThe x3690 X5 contains six external USB 2.0 ports, two on the front of the server as shown inFigure 4-2 on page 119, and four on the rear of the server, as shown in Figure 4-3 onpage 120 (rear).The server also has two internal USB ports, located on riser card 2, as shown in Figure 4-50on page 175. One of these internal ports is used for the integrated hypervisor key. The otherinternal port is available.See 4.13, “Integrated virtualization” on page 174 for more details about the location of theinternal USB ports and the placement of the internal hypervisor key.4.11.4 Integrated Trusted Platform ModuleThe Integrated Winbond Trusted Platform Module (TPM) Version 1.2 (WPCT201BA0WG)security chip performs cryptographic functions and stores private and public security keys. Itprovides the hardware support for the Trusted Computing Group (TCG) specification. Formore information about the TCG specification, go to the following website:http://www.trustedcomputinggroup.org/resources/tpm_main_specification4.11.5 Light path diagnosticsLight path diagnostics is a system of LEDs used to indicate failed components or systemerrors. When an error occurs, LEDs are lit on the light path diagnostics panel. Figure 4-47 onpage 171 shows the location of the light path diagnostics panel on the x3690 X5.
