Found this PCIe 2.0 x8 card: IOI Technology Corp. model - U3X8-PCIE8XE104 Octad Channel 8-port USB 3.0 to PCI Express x8 Gen 2 Host Card | U3X8-PCIE8XE104 but it is not sold directly from the manufacturer or anywhere on the interwebs. (I have contacted them before about another product and, no, they will not ship to the US.) Is there a STH-er here from Taipei, Taiwan willing to give them a call / visit them? Perhaps there would be enough interest to do a group buy? This card would be useful for a USB passthrough for up to 8 VMs while consuming only one PCIe (x8) slot. It uses the Renesas uPD720202 controller (2-ports but only one implemented on the card (obviously)) which should work with ESXi passthrough (I am currently successfully passing through a Renesas uPD720201 based card (it is the 4-port brother of the 2-port uPD720202)) I hope it is not too expensive - the controllers were priced at $10 per chip at introduction but the PCB implementation looks complicated. For comparison, a popular card used for USB passthrough is the 4-controller HighPoint 1144D which retails for $110. If this card is priced below $180, I think it would be a good deal. --------------- Check out IOI Tech's other products. They have some interesting stuff. The thing that caught my eye was their PCIe expansion (passive) products: QIP4X-PCIE16XB01 - PCIe x16 bifurcation to FOUR - SFF-8643 36pin (two SFF-8643 72pin) which you can then connect to their 5.25" bay PCIe enclosures like: DB525-D8XF0147015 - accepts two PCIe x4 cards (x8 slots), comes with SFF-8643 36pin cables and power cables integrated. Of course you are going to need some deep 5.25" bays if you want to put long PCIe cards in there. The whole thing is passive though, so it shouldn't be very expensive. Useful stuff for HEDT (high end desktop) / HomeLab setup, where you want to plug in many Video/Network/HBA/RAID/USB etc. cards but you have only so many slots. I wish there was an easy way to buy these products.