（1）S21 Product Manual:
▶ https://service.bitmain.com/support/productManual?archivesId=0072023120112005024559giONYS066C&type=2

（2）S21 Pro Product Manual:
▶ https://service.bitmain.com/support/productManual?archivesId=00720240408092832931hQl2w5kV06C4&type=2

（3）S21 Hyd. Product Manual
▶ https://service.bitmain.com/support/productManual?archivesId=007202311291351563189EAfs8bD0672&type=2

（4）S21 XP Product Manual
▶ https://service.bitmain.com/support/productManual?archivesId=00720240703171237262Lo2wvWxq0712&type=2

（5）S21 XP Hyd. Product Manual
▶ https://service.bitmain.com/support/productManual?archivesId=00720240702100755014zhFEQCbH069A&type=2

（6）S21 Imm. Product Manual
▶ https://service.bitmain.com/support/productManual?archivesId=00720240805152014395U78W0Dyf0668&type=2

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