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These LEDs indicate the operating states of the LAN. Figure 3. LAN Status LEDs Desktop Board Features Table 4 describes the LED states when the board is powered up and the LAN subsystem is operating. Table 4. LAN Status LEDs LED LED Color LED State Indicates Activity (A) Green Blinking LAN activity is occurring. Speed (B) N/A Off 10 Mbits/s data rate is selected. Yellow On 100 Mbits/s data rate is selected. USB 2.0 Support The Desktop Board supports up to eight USB 2.0 ports (four ports routed to the back panel and four ports routed to two front panel USB 2.0 headers). The USB 2.0 ports are compatible with USB 1.1 devices. USB 1.1 devices will function normally at USB 1.1 speeds. USB 2.0 support requires both an operating system and drivers that fully support USB 2.0 transfer rates. Disabling High-Speed USB in the BIOS reverts all USB 2.0 ports to USB 1.1 operation. This may be required to accommodate operating systems that do not support USB 2.0. NOTE Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device. SATA Interface The Desktop Board supports two SATA channels (3.0 Gb/s) that support one device per channel. The SATA controller supports IDE and ACHI configuration and can operate in both legacy and native modes. Expandability For system expansion, the Desktop Board provides one PCI connector that can support either a single PCI add-in card or a single- or dual-slot PCI riser card. Intel Desktop Board D410PT Product Guide BIOS The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE auto-configuration utilities, and the video BIOS. PCI Auto Configuration If you install a PCI add-in card in your computer, the PCI auto-configuration utility in the BIOS automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that add-in card. You do not need to run the BIOS Setup program after you install a PCI add-in card. Security Passwords The BIOS includes security features that restrict whether the BIOS Setup program can be accessed and who can boot the computer. A supervisor password and a user password can be set for the BIOS Setup and for booting the computer, with the following restrictions: • The supervisor password gives unrestricted access to view and change all Setup options. If only the supervisor password is set, pressing