A01R NMMiner Miner 265KH/S USB Chain ESP32 Crypto Miner BTC Solo Lottery Miner Ammeter USB Tester USB-A to Type C Nerdminer 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._x000D_ 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. With the usb-chain device, you can do that:_x000D_ Daily work and life current monitoring._x000D_ Lottery when charging your phone._x000D_ Double your lottery device hashrate without any power supply device added. Such as usb-chain + T190, usb-chain + for T Dongle S3, etc._x000D_ Due to different batches, there may be differences in product appearance and printed text, which not affect use._x000D_ Colour:As Shown_x000D_ Material:Plastic Package Contents:_x000D_ 1 * NMMiner Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_