It cannot be Scam
Reason:
(1) I have received the product.
(2) When you buy the product the receipt is given to you.
(3) I have contacted many peoples before its purchase that is it work perfect.
(4) The Zcash mining equihasher speed is not to big that i say it is perfect scam
A1 speed is 3200 & A2 speed is 1500 Only