HIKVISION DS-M5504HNI Series User Manual page 21

10. After the HDD is fully placed into the bracket,
tightly insert the second HDD into the socket.
11. Fix and tighten the two screws marked in the
figure.
12. Tighten the two set screws on the left and right
sides of the hard disk box, shown in the figure, to
fix the inserted HDD.
13. Align the two sharp edges of the hard disk box
marked in the figure, and assemble the whole
hard disk box.
Mobile Network Video Recorder User Manual
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