Is PCI Express x16 compatible with x4?

[Garrett Cooper]

Alexander Anderson wrote:
> I'm thinking of buying a PCI-e x4 RAID controller and I'm wondering if my
> motherboard with its PCI-e x16 slots would support it?
> 
> The controller card is HighPoint RocketRAID 2320:
> http://www.highpoint-tech.com/USA/rr2320.htm
> 
> The motherboard is Intel D975XBX2:
> http://www.intel.com/products/motherboard/d975xbx2/index.htm
> 
> Will these two get along with other?
> 
> Thank you.

x4 and x16 should have different slot sizes, but if memory serves me 
correctly the x4 is modular and fits within the x16 slot.

-Garrett