A NerdMiner is a small piece of hardware flashed with firmware designed to contribute the devices small amount of hashing power to a Bitcoin mining pool (Public Pool for example - https://web.public-pool.io/#/). Should your device be responsible for guessing the correct hash required to solve a block, you will receive the full block reward (3.125btc), minus fees. Chances of solving a block are proportional to the amount of hashing power contributed and so you’d have a very small chance with a single Nerdminer. Please read our blog posts for more in depth and technical information on mining.