Some D3 miners shipped after November 20, 2017 have larger hash boards. This change was made to better stabilize the miner.
D3 new version，
Hashboard D3 (N),D3_DashBoard_60_V2.21(222.6*176.6mm)
D3 old version，
Hashboard D3 (S),D3_DashBoard_60_V1.11(222.6*156.7mm)
When creating a repair ticket you can select either version. We will replace with the same version that was shipped to us.
Please refer to the following photos