Справочник Пользователя для Intel D815EEA2

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The 4 Mbit Firmware Hub has these features: 
•  System BIOS 
•  System security and management logic 

The boards support either the SMSC LPC47M132 or optional SMSC LPC47M142 LPC bus I/O 
controller.  

Both I/O controllers provide the following features: 
•  Low pin count (LPC) interface 
•  3.3 V operation 
•  Two serial ports 
•  One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port  

(EPP) support 

•  Serial IRQ interface compatible with serialized IRQ support for PCI systems 
•  PS/2-style mouse and keyboard interfaces 
•  Interface for one 1.2 MB, 1.44 MB, or 2.88 MB diskette drive 
•  Intelligent power management, including a programmable wake up event interface 
•  PCI power management support 
•  Fan control 

  One fan control output (fan 2) 
  Two fan tachometer inputs (fan 1 and fan 2) 

The desktop boards have a time-of-day clock and 100-year calendar.  A battery on the desktop 
board keeps the clock current when the computer is turned off.  

The desktop boards have four back panel USB ports.  Front panel USB support is available as an 
option to provide an additional two USB ports.  You can connect two USB peripheral devices 
directly to the computer without an external hub.  To attach more than two devices, connect an 
external hub to either of the built-in ports.   

With the optional SMSC LPC47M142 I/O controller, the boards support up to seven USB ports.  
The SMSC LPC47M142 I/O controller provides four ports:  two ports implemented with stacked 
back panel connectors and two ports routed to the optional front panel USB connector at location 
J8F1.  The ICH2 provides three ports:  two ports are implemented with stacked back panel 
connectors and the other port is accessible through a CNR add-in card. 

The desktop board supports the Universal Host Controller Interface (UHCI) and takes advantage of 
standard software drivers written to be compatible with UHCI.