It is possibly a power issue.  Better to run them using a powered hub such as the Gekko Science 7 port hub.  Instead of directly plugged into laptop/desktop/SBC  etc.

Should be another week out I think. We're hoping to have more orders to send their way and still have handful on hand.

Sounds good, let us know what timing to expect and I'l have the listings updated asap.

So my NewPac seem to be working fine with active fan cooling it. Its running smooth on 200 Mhz. Do I need to worry about anything if I want to increase the clocks even more? Or should I just start increasing gradually and see whether its stable?

At the moment I'm connected to the powered docker station before I bring my powered hubs. Not sure how exactly the docker works or what its power tho.
Its model Dell D3100.

https://www.laptopmag.com/reviews/accessories/dell-d3100-docking-station

I have there only one miner for the moment, so was hoping the power would be enough.

Dear people emailing me (the designer and manufacturer) for customer support:

Don't.

Seriously, don't.

I have my customers, that I support as best I can. There are about 7 of them, total, doing business right now all over the world. You would know if you were one of them. Everyone else is a customer of one of them. If you need help, talk to them first. The reseller got your money, not me. The reseller got a pretty decent amount of money, quite possibly more than I got. The reseller owes you customer service and will provide this customer service or risk losing access to my products in the future. That's the deal I make with resellers - they get the profits that I could keep for myself, and in trade I get to not hold strangers' hands all day so I can design and build cool stuff instead.

If you contact me for help, the first thing I will do is direct you to this thread, and to the reseller from whom you bought the product.

If for some reason the seller is not communicating or not helping you, you need to lead with this information. You also need to tell me who the seller is so I can have a chat with him about why he's not holding up his end of the bargain.

If the seller is not providing service, then I will help you. Otherwise I'll direct you to this thread, and to the reseller from whom you bought the product.

Maybe in the future I'll have a full-time sales rep and customer service agent. But for now, you instead get a competent fleet of resellers. Work with them, because it's specifically their job to work with you.

This PSA is brought to you by the two randos emailing me in the last six hours requesting help. Thank you, and have a nice day.

I just received my Pi 4 today and it didn't come with an SD card.  Can I use the SD card from my Pi 3 B+?

I tried it but it wouldn't boot.
Thanks,
Sam

My rasp pi 2
Rasp pi 3
Rasp pi 3+

Each one needs a different image