If you own the Google Nexus 5 and want to connect it with your PC, you need to install proper driver (ADB and Fastboot drivers) for your PC. If you are a new Android phone user, and don’t know how to install ADB and Fastboot drivers for your Nexus 5, here is where to download driver for Nexus 5 and how to install it on your Windows computer. Installing ADB Driver For Nexus 5
- Enable USB Debugging mode: Go to Settings – About phone – Tap on Build number 7 times to get “Developer options”. Now go back to Settings – Developer options – Enable USB debugging. 
- Download the latest Google USB Driver for Nexus 5 from here. Extract it on your PC. 
- Connect Nexus 5 to your PC with provided USB cable. 
- On your PC, open the Device Manager: Go to Control Panel – Open “Device Manager”. 
- In the Device manager, you will see the Nexus 5 listed on the “Other Device” with a yellow exclamation mark. 
- Right Click on the Nexus 5 – Select Update Driver Software – Then click on the “Browse my computer for driver software”. 
- Now, click on the “Browse” button and select the Google USB Driver folder that you extracted on Step 2. Click next to start the driver installation. Installing Fastboot Drivers for Nexus 5 – Switch off your phone and boot it in Fastboot mode by pressing and holding Volume Up + Volume Down and then pressing the Power button. – Connect your phone to your PC. Your PC will automatically recognize and install the right drivers for fastboot. That’s all! The driver installation completes.