When a user connects to the Internet, the download speed is the rate at which data (websites, videos, music, etc.) is transferred from another source to the device. Upload speed is the rate at which data (photos, videos) is uploaded to the Internet. If a user is going to download or upload numerous large files (e.g., streaming videos, a digital photo album) with low network speed, it could take hours for the content to transfer. Network speeds also have the potential to impact speed of delivery for emergency services or telemedicine. For more information, see What Speed Do You Need?