Intel DH55PJ BOXDH55PJ Manual De Usuario

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Product Description 
 19
 
1.7.2 
PCI Express x16 Graphics 
The Intel Core i7, Intel Core i5, Intel Core i3, and Intel Pentium processors in an 
LGA1156 socket support discrete add in graphics cards via the PCI Express 2.0 x16 
graphics connector: 
•  Supports PCI Express GEN2 frequency of 2.5 GHz resulting in 5.0 Gb/s each 
direction (500 MB/s) per lane.  Maximum theoretical bandwidth on interface is 
8 GB/s in each direction, simultaneously, when operating in x16 mode. 
•  Supports PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each 
direction (250 MB/s) per lane.  Maximum theoretical bandwidth on interface is 
4 GB/s in each direction, simultaneously, when operating in x16 mode. 
 
 
For information about  
Refer to 
PCI Express technology 
 
1.8 
USB 
The board supports up to twelve USB 2.0 ports through two EHCI host controllers on 
the PCH that allow the use of EHCI-compatible drivers.   
The port arrangement is as follows: 
•  Six ports via stacked back panel connectors 
•  Six front panel ports via three dual-port internal headers 
 
 
For information about  
Refer to 
The location of the USB connectors on the back panel 
The location of the front panel USB headers