Since my Lenovo E545 laptop doesn't have built in Bluetooth, I bought this Ant+ USB key so I can connect the laptop to my Wahoo Kickr Core indoor cycle for use with Zwift. I connected it to my windows 7 laptop, windows successfully installed all the necessary drivers and it works perfectly with my bike trainer and zwift. I also wear a Wahoo heart rate monitor while riding the trainer and this Ant+ USB stick successfully paired with it as well. Also. Everything worked perfectly with Zwift thanks to this product. I would recommend it to others. For me it was easy.