Dell PowerEdge M620 Hardware Owner's Manual - Page 146

Option Description OS Watchdog Timer (Disabled default). If set to Enabled, the operating system restarts the system if it locks up, based on the expiration of a timer. If set to Disabled, in the event of a system lockup, no timer is set and the OS does not restart the system in the event of a lockup. I/OAT DMA Engine (Disabled default) (PowerEdge M910, M710, M610x, M610, M600) If set to Enabled, the I/O Acceleration Technology feature is enabled for network controllers that support this technology. Embedded Video Controller (Enabled default) This option should always be set to Enabled. SR-IOV-Global Enable Enables/disables BIOS configuration of Single Root (PowerEdge M915 only) I/O Virtualization (SR-IOV) devices. (Disabled default) PCI IRQ Assignments Screen Option Description Use the and keys to manually select an IRQ for a given device, or select Default to allow the BIOS to select an IRQ value at system start-up. Serial Communication Screen The blade has a single serial port (COM1) which can be enabled for console redirection through the IMC. Option Serial Communication (Off default) Serial Port Address (COM1 default) Description Options are On with Console Redirection, On without Console Redirection, and Off. Sets the serial port addresses to COM1 or COM2. 146 Using the System Setup Program and UEFI Boot Manager