Справочник Пользователя для Intel Server Board S5500HCV S5500HCVR

3.  The type 2 riser card must connect the PCI Express* pin A50 with a 4.7K ohm resistor to pull up to 3.3 V. 

 
The following table provides the supported bus throughput for the given riser card used and the 
number of add-in cards installed. 

Type 1 Riser Card 

x8 

N/A 

Type 2  Riser Card 

x4 

x4 

There are no population rules for installing a single add-in card in the Type 2 riser card; you can 
install a single add-in card in either PCI Express* slot.