Maximize Every M.2 Slot in Your Mining Rig Running out of PCIe slots but still have open M.2 ports? This NGFF M.2 M Key to PCIe X4 Riser Adapter is your solution. Designed for crypto miners and PC builders who need to squeeze maximum expansion from every available interface, this compact adapter turns any M.2 M Key slot into a full PCIe X4 connection — no extra motherboard slot required. The built-in LED status indicator takes the guesswork out of multi-card management. At a glance, you can confirm each card is live and properly connected, saving critical troubleshooting time when you're managing a 6-card or 12-card mining frame. The horizontal low-profile 4-pin power connector is a deliberate engineering choice. By routing the power cable flat and away from the PCIe slot area, cable congestion and mechanical interference with adjacent cards is significantly reduced — a detail that matters in densely packed open-frame rigs. Gold-finger M.2 contacts deliver reliable, low-resistance signal transmission. The slim black PCB is built to fit tight spaces without blocking neighboring components or restricting airflow. CE, FCC, and RoHS certified. Plug in, check the LED, and get mining.