Which Slot, out of PCIe x2, x4, x8 or x16 slot of Computer Mother Board, Would Provide Maximum Bandwidth for PCIe 6612? - NI
SUNIX SER6437A PCIE 2-Port Serial RS-232 Card Low Profile - Add-on Card - Compatible with PCI Express x1, x2, x4, x8 and x16 Lane Bus (L-IDSUN-SER6437AL) shop at AUSTiC SHOP
PCI Express - Wikipedia
hardware - Force renegotiation of PCI Express link speed? x2 card reverts to x1 width - Server Fault