A used ASIC can be attractive when the condition of the exact unit is documented. Ask for evidence tied to the machine, not just the model name.
Request the model, variant, serial number and photos of the actual unit being sold. Two miners of the same model can have very different operating histories.
A serial can be partially masked publicly while still being matched to the hardware during the transaction.
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A useful test goes beyond spinning fans. Check detected hashboards, stabilized hashrate, temperatures, hardware errors and fan behavior.
Where possible, retain a dated screenshot, photo or video tied to the unit.
Look for excessive dust, corrosion, impact damage, overheated connectors, badly bent fins, damaged cables or undocumented repairs.
Cosmetic condition does not tell the whole story, but it can reveal reasons for deeper inspection.
Confirm PSU when separate, cables, packaging, any warranty, after-sales process and return terms that apply to the transaction.
Evaluate price together with the quality of evidence, not only against the cheapest listing.
VoltASIC structures used units around documented condition and a private Proof Pack after payment, including order reference, serial number(s) and recorded checks in the buyer tracking area.
Move from the guide to technical specifications, pricing and availability across the VoltASIC ASIC catalog.
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