CyberPower OL3000RTXL2UHV Owner's Manual page 5

Step 4: Adjust rackmount rails to fit your rack
Adjust the rail depth to match your rack depth. Attach the rackmount rail
to your rack with two screws and two plastic washers at the front of the
rack. (Located in position 1 & position 4) Tighten the M5X6L screws on
the front bracket. Secure the rail to the rear of the rack with two M5X6L
screws and two plastic washers.
Step 5: Place and secure the UPS on the rails
Slide the hanging brackets on the UPS into the rails mounted in the rack
with the front of the unit facing toward you. Secure the UPS to your rack
with four M5X12L*4pcs screws at the front of the rack. (Located in
position 2 & position 5)
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How to slide the UPS out from the rack
The UPS will be secured by a safety locking mechanism midway of
pulling it out of the rack. Use both hands to hold the UPS and press the
safety locking tab to pull the UPS out.
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