Question - PCIE x8 into a PCIE x4

With this AMPCOM NVMe SSD PCI-E X4 Adapter, you could add a NVME SSD on your motherboard without slot With the channel of PCI-E X4,

1 ADD OR UPGRADE YOUR DEDICATED GRAPHICS AND SOUND CARDS · 2 TV TUNER CARDS AND VIDEO CAPTURE CARDS · 3 ADD WIFI AND FAX FUNCTIONALITY · 4

best megaways slot Mac Pro Expansion Modules can use up to two slots each – in slots 1–2 and slots 3–4 Mac Pro comes with the Apple IO card pre-installed in slot 8

slot garansi kekalahan 100% Hello, is the Surface 8 Pro compatible with PCIe 4 drives or can I only use PCIe 3 ssd? If not all drives are compatible, which drives work?