{"product_id":"whatsminer-p221b-psu-power-supply-m31s","title":"Whatsminer P221B PSU Power Supply for Whatsminer M31s","description":"\u003ch2\u003eWhatsminer P221B PSU 3300W | Genuine Replacement Power Supply for Whatsminer M31s\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWhatsminer P221B-GB-12-3300-B-V01 power supply\u003c\/strong\u003e is the dedicated replacement PSU for the \u003cstrong\u003eWhatsminer M31s miner\u003c\/strong\u003e. \u003cstrong\u003e220-240VAC input\u003c\/strong\u003e, \u003cstrong\u003e12V \/ 265A main rail\u003c\/strong\u003e for the hashboards plus a \u003cstrong\u003e12V \/ 15A auxiliary rail\u003c\/strong\u003e for the control board. When the original PSU fails, swapping in a fresh P221B is faster than troubleshooting the failed unit board-level — back to hashing within minutes.\u003c\/p\u003e\n\u003cp\u003eGenuine OEM unit — same form factor, same connector pinout, same electrical envelope as the PSU originally fitted at the factory. Stocked in volume for repair shops and individual operators with M31s units in production.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace the P221B PSU\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo output \/ miner won't start\u003c\/strong\u003e — PSU dead, hashboards stay dark even with control board confirmed healthy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermittent miner shutdowns mid-mining\u003c\/strong\u003e — PSU rail sagging under hashing load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible coil whine or burning smell\u003c\/strong\u003e not present in normal operation — internal degradation, replace before further damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlown input fuse with shorted primary\u003c\/strong\u003e — full PSU swap faster than board-level diagnosis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFleet refit on aging M31s units\u003c\/strong\u003e — preventive PSU swap to keep uptime targets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhatsminer P221B PSU Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eP221B-GB-12-3300-B-V01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e220-240VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Current\u003c\/td\u003e\n\u003ctd\u003e16A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput 1 (main rail)\u003c\/td\u003e\n\u003ctd\u003e12V \/ 265A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput 2 (auxiliary)\u003c\/td\u003e\n\u003ctd\u003e12V \/ 15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Rated Power\u003c\/td\u003e\n\u003ctd\u003e3300W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWhatsminer M31s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eWhatsminer OEM (drop-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — Whatsminer P221B PSU\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: P221B vs P221C — interchangeable?\u003c\/strong\u003e\u003cbr\u003eA: Different variants in the same family. The C variant has updated electrical \/ connector specs. Match the part number on your existing PSU exactly. If unsure, email us with miner model and serial before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the P221B run on US 120V mains?\u003c\/strong\u003e\u003cbr\u003eA: No — input range is 220-240VAC. North American 120V residential won't meet the input voltage minimum. US mining facilities typically use 240V service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does P221B work on M30s \/ M32 \/ M50?\u003c\/strong\u003e\u003cbr\u003eA: P221B is specified for M31s. Other Whatsminer models use different PSU variants (P21, P222, P231B, etc.). Match the PSU variant to the miner family before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for fleet operators?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for volume pricing and air-freight quotes for urgent fleet repairs.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-brand-new-p222b-power-supply-unit-psu\"\u003eWhatsminer P222B PSU (M30 \/ M50 \/ M60)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-p21-switching-power-supply-psu-3300w-c19-plug-200-277vac-50-60hz-20a-max\"\u003eWhatsminer P21 Switching PSU 3300W\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-microbt-cb6-v10-control-board\"\u003eWhatsminer CB6 V10 Control Board (M20-M50)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-4pin-fan-simulator-immersion-cooling-p21-p221-p222\"\u003eWhatsminer 4-pin Fan Simulator (P21 \/ P221 \/ P222)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhatsminer M31s fleet operators refitting P221B PSU stock in volume? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42658642690227,"sku":null,"price":194.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/Whatsminer-P221B-new-original-power-supply-unit-microbt-repair-psu-crytpo-miner.webp?v=1747009092","url":"https:\/\/lys-sz.com\/products\/whatsminer-p221b-psu-power-supply-m31s","provider":"LYS Shenzhen","version":"1.0","type":"link"}