![Slot PCI-Express 3.0 X16 on Modern Motherboard of PC Computer Stock Image - Image of board, chip: 140363531 Slot PCI-Express 3.0 X16 on Modern Motherboard of PC Computer Stock Image - Image of board, chip: 140363531](https://thumbs.dreamstime.com/z/close-up-selective-focus-macro-lens-slot-pci-express-modern-motherboard-pc-computer-pci-express-new-140363531.jpg)
Slot PCI-Express 3.0 X16 on Modern Motherboard of PC Computer Stock Image - Image of board, chip: 140363531
Why is my RX580 seen as PCI x8 1.1 when it's supposed to be PCI x16 3.0? It's placed in the PCI Express x16 slot and there are no other slots occupied.
![X10DRi for Supermicro Industrial Package Motherboard C612 LGA2011 E5 2600 v3/v4 DDR4 3 PCI E 3.0 x16 and 3 PCI E 3.0 x8|Motherboards| - AliExpress X10DRi for Supermicro Industrial Package Motherboard C612 LGA2011 E5 2600 v3/v4 DDR4 3 PCI E 3.0 x16 and 3 PCI E 3.0 x8|Motherboards| - AliExpress](https://ae01.alicdn.com/kf/S1cbcc08571b443029dd864c8daad9db3N/X10DRi-for-Supermicro-Industrial-Package-Motherboard-C612-LGA2011-E5-2600-v3-v4-DDR4-3-PCI-E.jpg_Q90.jpg_.webp)
X10DRi for Supermicro Industrial Package Motherboard C612 LGA2011 E5 2600 v3/v4 DDR4 3 PCI E 3.0 x16 and 3 PCI E 3.0 x8|Motherboards| - AliExpress
![Amazon.com: StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter - PCIe x1 to x16 Adapter (PEX1TO162) : Electronics Amazon.com: StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter - PCIe x1 to x16 Adapter (PEX1TO162) : Electronics](https://m.media-amazon.com/images/I/71NIqopTcmL._AC_UF894,1000_QL80_.jpg)
Amazon.com: StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter - PCIe x1 to x16 Adapter (PEX1TO162) : Electronics
![Asus H61m-e Motherboard 1155 Motherboard Ddr3 Support Xeon 1230 V2 Processor Lga 1155 Intel H61 16gb Pci-e 3.0 X16 Vga Micro Atx - Motherboards - AliExpress Asus H61m-e Motherboard 1155 Motherboard Ddr3 Support Xeon 1230 V2 Processor Lga 1155 Intel H61 16gb Pci-e 3.0 X16 Vga Micro Atx - Motherboards - AliExpress](https://ae01.alicdn.com/kf/A3c8116b9a8b5453b888434d0330f094cS/ASUS-H61M-E-Motherboard-1155-Motherboard-DDR3-Support-Xeon-1230-v2-Processor-LGA-1155-Intel-H61.jpg_Q90.jpg_.webp)
Asus H61m-e Motherboard 1155 Motherboard Ddr3 Support Xeon 1230 V2 Processor Lga 1155 Intel H61 16gb Pci-e 3.0 X16 Vga Micro Atx - Motherboards - AliExpress
![Jingsha X79P3 ATX Motherboard Supports AMD Crossfire 3* PCIE 3.0 x16 Supports CPU E5 E5V2 2697V2 2680V2 LGA2011 Core I7 M.2 SSD Socket - Newegg.com Jingsha X79P3 ATX Motherboard Supports AMD Crossfire 3* PCIE 3.0 x16 Supports CPU E5 E5V2 2697V2 2680V2 LGA2011 Core I7 M.2 SSD Socket - Newegg.com](https://c1.neweggimages.com/ProductImage/AGKC_132030839255556185XFM3cf6GmL.jpg)