Horrible experience. Item ordered was not in stock. No one notified me. No record of order other than receipt from payment processor. No one answers phone. Chat was available at first, was told a refu... See more
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I bought an Antminer from Spain and I received very fast and all very good. I had many doubts and questions and the support team always responded quickly and very well. Highly recommended. Compré u... See more
Company replied
I have purchased several systems from this company. I unfortunately had one go down. I've sent several emails to this company as its under warranty and no reply to get it repaired or replaced...... See more
Company replied
I purchased six miners from VIPERA. Everything was delivered within the 7-10 days that were promised. They also have excellent customer service; however, because their phones are often busy, use the l... See more
Company details
Written by the company
Vipera is a premier source for selective, highly sought-after electronics and cutting edge technology solutions catering to the digital advertising, cryptocurrency, A.I. processing, corporate I.T. and PC gaming industries.
Contact info
8500 N. MoPac Exwy., #812, 78759, Austin, United States
- 18774465697
- info@viperatech.com
- viperatech.com
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Everything ok
Everything ok, fast delivery !! I received my unit on time with out any trouble thanks

Reply from Viperatech
Fast and effective delivery of Antminer…
Fast and effective delivery of Antminer Ka 3 166th.

Reply from Viperatech
Shady practices; will confirm anything to get you to buy; borderline racist!
I ordered a miner from viperatech over a month ago, when their website indicated it was in stock. To confirm, I sent three messages to ensure it would be delivered by mid-January. However, after not receiving my order for several weeks, I inquired about its status. The company now informed me that my order is a pre-order, with delivery expected in February. This was contradictory to the information on their website at the time of my purchase, as well as to the three confirmations I received about a mid-January delivery.
Despite my order being placed in December and the prior confirmations of an earlier delivery date, the company refused a refund, citing a no-cancellation policy. My advice for future customers is to take a screenshot of the website during the purchase for proof, as the company may change the website information later (which I unfortunately didn't do). Additionally, keeping a record of all correspondence with the company is crucial, as it can be valuable in case of a credit card dispute, which I had to initiate. I would recommend using this company only if it's your last option.
****UPDATE****
I thought I would follow-up on this review, because this company is absolutely terrible. I won the credit card dispute, but this was the last message they sent me, almost racist, no?:
"VIPERA: Bope. You are probably going to lose the dispute btw. You aren't the first one who can't read our purchasing policy. IF other resellers had them in stock and ready to ship, you'd have a point. But they don't, because goldshell hasn't sent anything out expect very limited pre release samples to reviewers, industry pros and testers.
And you can't even bare to wait another 2 weeks as if your life depends on it.
Instead you file a chargeback and leave us a 1 star review? Trash 1-unit headache retail customer. We do business with your type as a pittance, not a requirement.
And if you were expecting some sugar-coated response from a Filipino Amazon customer service rep, you're way off."
SOOO, if you're in the market for a delightful experience with a company that specializes in crafting fairy tales (I messaged them beforehand to confirm stock availability, so the sudden production sob story should only be valid for a pre-order scenario, which, surprise, wasn't my case), and then gallantly declines to issue refunds after their grandiose failure to deliver, and as a cherry on top, graces you with remarks that teeter on the edge of racism when you dare to question their ethos—then, my friend, you've hit the jackpot with this company!

Reply from Viperatech
secure, reliable, efficient and good quality
excellent service and delivery time. Prices are really good

Reply from Viperatech
The company does not fulfill its Liabilities ! Scam?
I bought an ASIC Bitmain KS3 on May 19 for $23,535 and paid with USDT, but I didn’t receive the ASIC. First they promised September 27, then October 5. I never received a tracking number or waybill, today is January 20, 2024. The company claimed that the parcel was at customs, but 2 months had already passed. The company did not provide any tracking number or package number. But now they are silent, the support is silent, Sabrina Monti is silent, James is silent! I wrote dozens of appeals, but everyone is silent! In the online account the status is “in progress” but there is no answer. I don't know if they are scammers or not... Be careful with this company! If something changes, I will change the review and let you know what has changed... I gave an honest review, you can rest assured
Updates to my review:
Update November 23rd:
The company has not yet provided a tracking number or waybill !
Viperatech: Please, send me the waybill, tracking number or parcel number
December 26, update:
The company has not yet provided a tracking number or waybill. The miner still hasn’t received it, the company is simply silent and doesn’t want to talk. I called the phone and gave the order number, but they told me that they couldn’t hear me well and hung up... I called back again, but there was no answer...
January 20, 2024 update:
It's been 8 months and I still haven't received my order. There is no response to my requests. Be careful, you may lose your money
11th of March, 2024 update:
I've been waiting for my parcel for 10 months. Nobody answers me, they don’t even want to talk to me. Be careful with this company. Who can help my email: ilyast12.gmail.com
May 13, 2024 Update:
The company claims that my ASIC was confiscated by customs. But they did not provide any evidence that they sent the package. No tracking number, nothing... The customs service did not send me any notifications that I had to pay the duty or that my ASIC was confiscated. If my ASIC was indeed confiscated, then they sent it illegally. I paid for legal delivery through Dubai, perhaps they sent my ASIC illegally through China or Hong Kong...

Reply from Viperatech
All questions were answered very…
All questions were answered very quickly and accurately. Delivery was received on time

Reply from Viperatech
3rd time buyer
Bought another ASIC from viperatech, they have always been fast getting things going. Product arrived no damage and working well.

Reply from Viperatech
Great experience from day 1
Great experience from day 1. Very helpful during the whole process. A bonus is that the bitmain ks3 8.3 arrived 1 week early.

Reply from Viperatech
The order have been process pretty fast…
The order have been process pretty fast . It have been simple and my product is working well. Overall , everything went well.

Reply from Viperatech
The delivery was much faster then anticipated
The delivery was very fast. We had our miner in less than two weeks. We had some issues getting it started. We contacted customer service and they responded from overseas in less than 6 hours. Our problem turned out to be AI Protection on our Asus router. After correcting that, we were up and running. Currently planning our next miner purchase. Thanks, Viperatech!!

Reply from Viperatech
Equipment delivered swiftly and in…
Equipment delivered swiftly and in great shape. Packaging was primo. Equipment in good workong order. Would buy from Vipera again

Reply from Viperatech
Viperatech customer service
The customer service, attention and response time was excellent. The dispatch was super fast; The teams arrived at my address in Florida on time and always responded promptly to all my concerns.
Excellent in every way. Many thanks for everything. Totally Recommended.
Kind regards

Reply from Viperatech
Terrible experience with my last…
Update: The company is now refusing to refund me the difference until I delete this review. Copy/Paste from email: We aren’t sending you a damn thing until you remove that review. I am now told my extended warranty for my previous purchases are now only 1 year instead of 2 because of this review and to contact bitmain directly for any problems since they won't honor their warranty anymore.
Terrible experience with my last purchase. Ordered a E9 Pro 3780MH on October 28. Waited 2 weeks for them to send me a tracking number. Finally received a tracking number after having to ask for it. Tracking number never moved/updated (pretty sure it wasn't valid). Another 2 weeks later I still have to message them to be told oh they lost the package in transit (total bs). Another 3 weeks later I received the wrong E9 pro... They sent the E9 3680MH which again I have to email them about. They first ignored my messages and after 1 week and a half of sending messages, I finally get an answer. The answer was: Oh we we're out of 3780MH. I then messaged again waiting for a reply to get refunded the difference in prices of both miners just to be ignored again. I'm tired of having to be the one to messaging them 3 times in a row just to get an answer.

Reply from Viperatech
I recently purchased the IceRiver KS0…
I recently purchased the IceRiver KS0 Pro from Viperatech, and my experience has been nothing short of fantastic. The product was delivered exactly as promised, meeting all my expectations and more. What really stood out for me, however, was the exceptional support.

Reply from Viperatech
Great Company
Myself and friends have used Vipera Tech several times for purchasing mining equipment. They are the best in the business. Highly Recommended!

Reply from Viperatech
The process was seamless
The process was seamless. This was my first time buying a miner and I was super nervous with spending this type of money and waiting on it. They answered all my questions and my package arrived with no problem!!!

Reply from Viperatech
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