Review on 🎮 High Capacity 128GB Micro SD Card for Nintendo-Switch, Action Camera, GoPro & Dash Cam - KODAK MicroSDXC Memory Card, Read Speed up to 100MB/s by Joshua Martinez

While I didn't get the 100MB/s read speed advertised on the box, I came very close when connected to the latest laptop with a microSD slot, so there was no adapter. Previously I tried using an adapter on a USB 3 port and got a 5x slower speed. So it depends a lot on the interface and adapter for your computer, not the limitations of this product. Any adapter was not included.