To understand better how to decide which risercard to use it is convenient to know about the way slots are numbered. On the picture you can see how the slots are numbered. A lot of mainboards don't have any slot at all at position 7, in that case the AGP slot (if available) will be on position 6. The risercard in your system is always mounted at position 6. So the first step is to decide what kind of slot the risercard needs to have on position 6, PCI (32-bit, 64-bit, PCI-express) or AGP. When using a 2U risercard , the risercard also needs to be connected to two other slots for supporting all three slots on the risercard . Usually a 2U risercard uses slot 1(AGP), 2(PCI) and 3(PCI) or slots 2(AGP/PCI), 3(PCI) and 4(PCI). There are also some special risercards which can support other slots, those are mostly flatcable-risercards . An example of this is a risercard that supports slots 2, 3 and 6.








Model # Image Form
Factor
Front
USB Port
Internal
Drive Bay
Hot Swappable
Drive Bay
Optical
Drive Bay
Expansion
slots
Mainboard Size(inch)
DD-603605-C7-U

DD-611-U

DD-611-CX-U

DD-630660-C7-U

DD-631-CX-U

DD-632661-C9-U

DD-603605-C7
1 PCIe x16 and 1 PCIe x8 Riser Card
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm
DD-611
PCI to PCI Riser Card
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm
DD-611-CX
PCI to PCI Riser Card with Various Length Ribbon Cable
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm
DD-630660-C7
2U 2 PCIe x16 with 7cm Ribbon Cable
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm
DD-631-CX
PCIe x1 to PCI Riser Card with Various Length EMI Shielded Ribbon Cable
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm
DD-632661-C9
2 PCIex16 + 1 PCI-32bit with Flexible Cable Riser Card
Drives:
Dimension(WxHxD):
• 0.00 x 0.00 x 0.00 inches
• 0.0 x 0.0 x 0.0 mm