Document examination equipment HS3B is already very popular in the market , specialize in handwriting analysis, fingerprint,csi and forensic science .Now some customer want to replace its SD card. If the SD’s storage can  not meet your demands , you can replace the SD card as below intrustion :

Firstly , pls remove the 4 screws with screwdriver

Then open the HS3B

Find SD card in HS3B

Take out old SD card and exchange the new one

This procedure is very simple , now the HS3B can work correctly again!

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