Dahua NVR21-S2 SERIES

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③Pull the HDD knob up when you put the HDD
into the box in case the knob buckle may strike
the front panel.
④Put the knob back after you insert the HDD
to the SATA board.
.
3.5 CD-ROM Installation
Please follow the steps listed below.
① Open top cover and then remove the
HDD bracket
② Take off the bottom of the HDD bracket and CD-ROM
bracket.
③ Fix the CD-ROM bracket at the HDD
bracket.
④ Install a pair of the CD-ROM bracket. Please make
sure the reverse side is secure too.