Historical reference MicroBT

WhatsMiner M3 historical product and support record

Manufacturer-sourced M3 history and exact legacy support boundary. No current manufacturer product-manual specification was found.

Efficiency —

Choose the exact named M3 record

Exact-name boundary: these are separate named models. Do not carry firmware, recovery, control-board, power, noise, or parts assumptions from one model or suffix to another.

M3 Historical product record · reviewed reference Exact specifications unknown Current exact reference M3X Evidence-limited identity · reviewed reference Grouped M3x scope is not an exact specification Open exact model reference

Full Specifications

Full technical specifications for this miner.
Model	WhatsMiner M3 historical product and support record
Model Number	WhatsMiner M3
Manufacturer	MicroBT
Status	Historical reference

Historical manufacturer record: the manufacturer’s 2020 company history identifies M1/M3 as its first product generation, launched in 2017, and states that 300,000 M3 units were sold in 2018.

This establishes the M3 product name and generation, not an exact production specification. The attached primary source does not publish hashrate, wall power, efficiency, voltage, noise, dimensions, weight, PSU, chip count, board platform, price, or a precise model release date. Former values for those fields have been withdrawn.

Evidence state

Exact product name: WhatsMiner M3.
Historical generation: first-generation M1/M3 product.
Manufacturer history: launched as a generation in 2017; reported M3 sales in 2018.
Exact model specifications: not established by the attached source.

Current legacy firmware evidence

The current manufacturer download center retains an exact M3 legacy upgrade entry scoped to M3/M2/M1 with an H3 control board and an old-tool requirement, plus a separate H3 SD-card entry stated for M3 only. This establishes a narrow legacy lane, not that every unit labelled M3 has H3, not universal board compatibility, and not eligibility for a newer grouped M3x file.

Firmware and recovery

Record the complete displayed miner type exactly as returned, raw platform, installed version, cooling class, and symptom. “M3,” “M3X,” and catalog shorthand such as “M3x” are not interchangeable recovery identities. If any record is missing or conflicts, do not select a package.

Confirm this miner’s platform before firmware or recovery.
Only after identity is resolved and the exact M3/H3 boundary matches, review the current official firmware and recovery scope.
For no boot, missing or conflicting identity, or electrical or thermal symptoms, request WhatsMiner diagnosis.

Related identity record

M3X evidence-limited identity record · current M-Series manual directory

Primary sources: manufacturer company and product-generation history, published April 24, 2020; and the manufacturer firmware catalog, checked August 27, 2026.