‎Aurora R13, PCIe x4 slot not working?

pciex4 slot   Dan evening slot

'PCIe x4' connections have four data lanes; 'PCIe x8' connections have eight Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection

1 x key-M slot for PCIe x4 Gen 4 1 x 2230 for WIFI PCIe 1 x FAN LED, 2 x POWER LED Ethernet, Intel 1010010002500 Mbps RJ45 Hi I am looking for a recommendation for a PCIe card that has 8 Sata ports that fits in a x4 slot I need an additional 8 ports but my board

how many episodes of poker face A PCIe card and mainboard will negotiate the connection to the fastest supported by both So a x4 card will fully utilize a x4 slot  2 Key M 2280 with PCIe x4 NVMe SSD slot; 1 x Micro SD slot Expansion 1 x MIPI CSI-2 connector ; 1 x Full-size PCI