hardware - What's the bandwidth and form factor for PCIe x1 x4 x8 and x16? - Server Fault
O que é PCI Express? (PCIe x1, x4, x8 e x16)
PCI-E PCIe express X4 riser card [ST8021] - $4.49 : Sintech Eshop!, The World of PC Adapter Card
All about PCIe (PCI Express) – Elgato
Amazon.com: BEYIMEI PCI-E Card 4X to USB 3.1 Gen 2 (10 Gbps) Type A+Type C Expansion Card Asmedia Chipset for Windows 7/8/10 Compatible Slot: PCIe x4, PCIe x8, PCIe x16 (Type A+Type