<p>The NM-usb-chain is a NMMiner development board. At first glance, you may think it's just an ordinary ammeter or USB Tester, but in fact it's also a BTC lottery ticket. It can not only provide the precise current measurement, but also achieve the 300% high Hashrate 265KH\/s over other ESP32-S3 lottery.</p> <p>Most importantly, the nm-usb-chain includes a male USB-A port and a female USB-A port. Multiple usb-chains can be connected in series to form a lottery chain, which is really interesting. Of course, this is not all of the nm-usb-chain functions.</p> <p>With the usb-chain device, you can do that:</p> <p>Daily work and life current monitoring.</p> <p>Lottery when charging your phone.</p> <p>Double your lottery device hashrate without any power supply device added. Such as usb-chain + T190, usb-chain + for LILYGO T Dongle S3, etc.</p> <p>Due to different batches, there may be differences in product appearance and printed text, which will not affect use.</p> <p>Colour:As Shown</p> <p>Material:Plastic</p> <p>Package Contents:</p> <p>1 * NMMiner</p> <p>1 * Adapter (appearance may vary depending on batch)</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>