Uniwell AX-3000 series User Manual page 9

Interface Cover
Before you connect / disconnect the cable to the peripheral(s), make sure that the power is "OFF".
1) Pull the cover by pushing two hooks to remove the interface cover.
2) Insert 3 projections into the opening of the cabinet and two hooks likewise.
Close the cover by pushing the positions (not hooks) on the cover indicated by triangles
in the image below.
Bottom of LCD case
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