What is this?BitaxeSupra is the 4th major revision of the that now includes the BM1368 ASIC from the Antminer S21 The BM1368 is a undocumented SHA256 mining ASIC from Bitmain. It's used in the Antminer S21 Bitmain claims the BM1368 has 17.5 J/TH efficiency The BM1368 has a different footprint and pinout from the BM1366, BM1397 and BM1387 in previous . The fan appearance and fan cable length from batch to batch, but not affect the use! Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. The fan appearance and fan cable length from batch to batch, but not affect the use Voltage: AC100-240V Plug Type:BR Plug,it applies to Brazil and so on. Colour:Orange Bracket Material:PCB+Plastic Package Contents: 1 x Miner(PCB board color is random,Specified color is not accepted) 1 adapter Only the above package content, other products are not included. 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.