MicroBT Control Board CB4_V10 for Whatsminer M21S M20S M31S+ M30S++ Miner
This CB4_V10 control board fit all of whatsminer, you just need update the diffrent hardwares. if you
dont find the hardware by youself ,plesase contact us ,we can sent you by the email.
- 1. New miner warranty ,the warranty depend on the different Original factory standard. normally-
Antminer : 12 months
other miner :6 months
Please check the product description carefully before PO.
- 2.If you ordered the second hand(used) miner ,the warranty is 48 hours after you get the miner. so ,please test the miner as soon as you get the miner in 48hours .
- 1. Caution: Wrong input voltage may probably cause miner damaged
2. Max condition: max reference power, min AC input voltage
3. Including PSU size
4. Including PSU weigh
5. Max condition: Fan is under max RPM(rotation per minute).
- 1. Pre-Order Miners – We cannot guarantee delivery date as shipping is contigent on the manufacturer. Pre-orders cannot be cancelled or returned.
2. New Miners (In-Stock) – Shipped from our China or Hong Kong warehouses with delivery typically within 2 weeks.
3. Used Miners – All used units are tested by our technicians prior to shipping. Please allow an additional 3-5 business days for testing.
4. Large or Custom Orders – Additional time may be necessary to source or process large or custom orders for shipping.
5. We are not responsible for delays in shipping due to COVID or other logistic problems beyond our control.