Whatsminer power supply P21E for M10s, M20s, M21s, M31s, etc. ***همراه با مهلت تست بدون تعمیر *** WhatsPower P21E 3300W is a high-efficiency and energy-saving miner power supply specially designed for Whatsminer mining. Its power supply has a rated power of 3300W and has functions such as output under voltage, overvoltage, overcurrent, short circuit protection, and input temperature protection. Furthermore, the power supply is made of high-quality steel, which is durable and easy to install.