PCI-e express 1X to 4port 16X multiplier riser cable diy bitcoin

2 layer PCB bard designing.
1-slot PCI-E 1X to 4 slot 16X riser card with high speed USB 3.0 cable.
high speed USB 3.0 shield cable is flexible for 1U, 2U, 3U chassis.
support 4 port high speed PCIe 1X,4X,16X card(But only 1X speed in fact).
Solid capacitor provide extra stable power supply for PCI-e card
USB 3.0 Cable Length:50cms