Intel DG35EC Manuale Utente

17 

Table 3 describes the LED states when the board is powered up and the LAN 
subsystem is operating. 

A (Link) 

Off 

LAN link is not established 

 

Green 

On 

LAN link is established 

  Blinking LAN 

activity 

is 

occurring 

N/A 

Off 

10 Mb/s data rate 

Green 

On  

100 Mb/s data rate 

B (Speed) 

Yellow 

On 

1000 Mb/s data rate 

The Desktop Board supports up to 10 USB 2.0 ports (six ports routed to the back 
panel and four ports routed to two internal headers) via ICH8.  USB 2.0 ports are 
backward 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 Hi-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. 

The board’s IDE interface handles the exchange of information between the processor 
and peripheral devices such as hard disk drives and CD-ROM drives.  The interface 
supports: 
•  Up to two IDE devices (such as hard drives) 
•  ATAPI-style devices (such as CD-ROM drives) 
•  Older PIO Mode devices 
•  Ultra DMA-33 and ATA-66/100 protocols 

The Desktop Board supports four Serial ATA channels (3.0 Gb/s) via ICH8, connecting 
one device per channel.