1 kH/s is 1,000 (one thousand) hashes per second
1 MH/s is 1,000,000 (one million) hashes per second.
1 GH/s is 1,000,000,000 (one billion) hashes per second.
1 TH/s is 1,000,000,000,000 (one trillion) hashes per second.
1 PH/s is 1,000,000,000,000,000 (one quadrillion) hashes per second.
1 EH/s is 1,000,000,000,000,000,000 (one quintillion) hashes per second.

so 220KH is 220000 hashes per second

EMAIL:

Dear user,

You are receiving this email because you are a valuable customer of batch 1 and batch 2 of the Antminer X3.

Thanks to your continued belief in Bitmain products, we are now sold out of these first two batches of the Antminer X3.

We are soon going to release batch 3 and batch 4 of the Antminer X3 with a reduced price of 3,000USD and 1,900USD, respectively. But please note that the ship-out dates of batch 3 and batch 4 will follow those of batch 1 and batch 2, respectively.

To thank you for trusting us with the very first batches, we would like to offer you one of the following choices in light of the significantly reduced price of the upcoming batches:

Option 1: A courtesy refund or credit equal to the USD price difference between batch 1 and batch 3 (if you are a buyer of batch 1) or between batch 2 and batch 4 (if you are a buyer of batch 2). If you select this option, a customer support representative will contact you to confirm whether you would like either a refund or a credit.
Option 2: Quadruple (4x) your quantity and keep the ship-out dates of batch 1 and batch 2.
Option 3 (only if you chose the USD payment option and did not pay): Simply do not pay for your submitted order.
How to select your option

Click here or copy & paste the following URL in your browser: https://support.bitmain.com/hc/en-us/requests/new
Select “A5-Others” under Bitmain's Product or Service.
Under Ticket Type, go to A2-Existing Orders’ Issue and select A21-Antminer X3,B1 and B2 order issues
In the Subject field, type “Antminer X3, B1 and B2 order options”
In the Description field, type the option number you have selected and your 16-digit order ID. For example:
Option 1, order ID: 0000001234567890
Click Submit and you are done.
We will announce the time of release of batch 3 and batch 4 very soon.

Thank you for your continued support.

 

Happy mining,

The Bitmain Team