PCI express slot divider

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1

Hello,


Has anyone seen PCI express slot divider

single x16 to four x4,

single x16  to two x8,

or something similar.

2

I don't think that is possible. Because each slot is set up on its own lane to connect to the CPU I don't think you could divide it up like that. I believe it is only one device per slot. 

3

Today I was looking for pci express  extender and found by chance this http://www.aerocooler.com/product_info.php?products_id=2513

4

a riser, not exactly a splitter.

5

than why it has one input and two output ? 

6

LINK