Seen as the ultimate win-win, successful reproduction of the earlier models of the Whatsminer M10 series, the products consisted of the M20, M21, M21b, M20s, and M21s, all adopting Samsung 8nm chip, and releasing MicroBt's new logo, which has more features and is more characteristic.

Founded in 2016, Shenzhen Bit Microelectronics Technology (Also Known as MicroBt) is one of the leading Application Specific Integrated Circuit (ASIC) producers. The company is into the production and design of high-end 28nm/16nm/7nm working chips and provides developments/assistance in fields such as blockchain technology, cloud computing, and artificial intelligence.

About Whatsminer M21S

Like its previous model, Whatsminer M21, Whatsminer M21S comes with an integrated design with a long power supply and smaller sizes. The hash board has a design like that of the Whatsminer m21 to buy the dashboard separately to couple it with M21 components.

Specifications

The hash rate of the Whatsminer M21S is 56T, which gives it an edge over the M21 model, and the physical size is 155 x 240 x 390mm with a weight of 7.1kg. The size dimension makes the device less bulky to handle and also helps conserve space in mining farms. 

The M21s come with a P5-12-2200-V1 power supply to produce an output of DC 12.8V 172A, and the 10A socket in the mining farm works well. 
The power supply comes with an aluminum rack, which protects the wires on the connector side. It is used as a handle for ease of usage.
This miner works with a power efficiency of 0.06j/Gh, and it has two 12038 cooling fans, one for blowing air and one for release of air, and the fan power is 12V 2.8A, just like its older model.

Algorithm

The Whatsminer M21s mines with the SHA-256 algorithm can produce up to 40 coins, but the top coins are Bitcoin(BTC) and Bitcoin Cash(BCH). With an average hash rate of 56Th/s, it uses 3360W of power.