Hey, sorry for the late reply, you can get it from amazon https://www.amazon.com/Lian-Li-O11DXL-1-Vertical-O11Dynamic/dp/B095NZ6WSJ?th=1

​

Or you could always get the pcie 3 version and just change The riser cable.

Exampl,e: https://www.amazon.de/-/en/Lian-O11DXL-1-Riser-Card-Expansion/dp/B07ZB1C5DV/ref=sr\_1\_2?crid=2JUP713XEQ25L&keywords=Lian%2BLi%2BO11DXL-1&qid=1673093139&sprefix=lian%2Bli%2Bo11dxl-1%2Caps%2C114&sr=8-2&th=1