Highpoint RocketU 1444C PCIe 3.0 x16 USB 3.2 Gen 2x2 Controller Card - 4 Ports 20Gbps SuperSpeed - Perfect for Data Transfer, Video Editing & External Storage Expansion

It’s a great product, like everything Highpoint makesHowever, be careful when choosing the slot to run it in and be careful installing it. Make sure it doesn’t make contact with an adjacent card while runningThe heat sink/fan assembly is rather thick- so if the card in the adjacent slot sags (or vice versa, depending on your orientation) you may experience weird behavior, like the system immediately powering off after power onIt fits in a single slot, and if the other cards are properly fastened and don’t exceed their clearance, you’re fine. Just pay attention