Don't get scammed buying mining equipment, make sure you know who you are buying from personally. If you don't make sure whoever referred the seller to you has made a successful deal and knows them personally. Make sure you confirm who you are communicating with is the actual person you think it is. Do a video call, make sure you have chat history, include trusted individuals in a group chat around the deal. Additionally, consider using multisig tools with additional mutually trusted signers to mitigate scammers. Too many scams going around lately with mining equipment. Be vigilant and don't be fooled by deals that seem too good to be true.