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The “Power Manager” has two LED indicator lights that let you know what it is happening 

The left light is Amber and the right one is Red 

 

Amber

  

 

 

  Red

  

 

1.

When the power button is switched to the “On” position, both 

indicator lights will light up for approximately 2 seconds. 

 

2.

Both lights will then turn off while the “Power Manager” evaluates 

the power required to charge the first set of devices. 

 

3.

The Amber light will come on and stay lit indicating that the “Power 

Manager” is now in “Smart Charge” mode.  This means that laptops 

will be charged in groups, three minutes at a time. 

 

4.

Once the power needed to charge all of the devices in the cart 

reaches a level that will not trip the circuit, the “Power Manager” 

enters “All Charge” mode and both lights will be off.  All devices are 

now charging. 

 

1.

If both the Amber and Red lights start to blink, it means one set of devices is drawing too much current and the “Power 

Manager” needs to be reset by turning it off and back on. If problem persists there may be a faulty device that needs to be 

removed. 

 

2.

If the Amber light displays single blinks, it means the current required to power the auxiliary outlet is too high.  Unplugging 

whatever is in the auxiliary outlet should allow the “Power Manager” to resume charging the devices. 

 

3.

If the Amber light displays double blinks, the internal temperature of the cart is too high. Open the doors of the cart and/or move 

the cart to a cooler room. The cart should cool down without having to turn off the “Power Manager” 

 

 

MDMLAP32NR 

32 Laptop Computers in Vertical Slots 

 

Maximize your Tech Investment 

 

The MDM Network Ready Laptop Cart provides 

you the infrastructure to secure, charge and 

update 32 computers. 

 

The cart ships fully assembled with: 

 

33 Ethernet cables pre-wired and ready to 

plug into your laptops 

 

Dedicated space for your 19” rack-mounted 

network switch 

 

Two thermally-controlled fans to dissipate 

heat while your computers are updating 

 

Save time and money by sending patches, 

updates and content to all of the devices in the 

cart at once. 
 

Dual-Locking Swing Handle  

Flexible Security 

The MDM Laptop Cart is secured with a 

unique dual-locking handle built right 

into the doors.  The handle can be 

opened by using EITHER the three digit 

combination or a key.  

2. Using the Combination Lock 

 

Dial in the factory set combination 

– “000” 

 

Turn the wing knob 180 degrees 

counter clockwise until the arrow 

points straight up (3).  Lift and turn 

the handle to open the door. 

 

To re-lock, turn the wing knob 180 

degrees clockwise and scramble 

the combination. 

The MDM Laptop Cart features the new and improved Power Manager, which is designed to continuously charge even 

the most power hungry laptops using only one wall outlet. 

The system uses a “Round Robin” charging cycle that constantly evaluates the demand for power and allows each 

electrical strip time to cool down. Cooler batteries last longer, and extended battery life saves you money. 

When the total draw of the devices allows it, the Network Switch will turn on automatically and receive continuous power 

until the unit is powered off. 

Two Heat Sensors inside the cart communicate the internal temperature to the Power Manager. When it exceeds 77°F 

the fans will turn on and if it gets above 100°F the system will stop sending power until the cart cools down. 

Power Management System … The “Power Manager

 

11000 Seymour Avenue     Franklin Park, IL  60131  USA      800 521 9614 

    www.bretford.com 

1. Using the Key 

 

Insert the key into the lock and 

turn it 180 degrees counter 

clockwise (2) 

 

Lift and turn the handle to open 

the door. 

 

To re-lock, turn the key 180 

degrees clockwise.

 

3. Changing the Combination 

 

Put the keylock in the locked 

position and dial in the existing 

combination. 

 

Turn the wing knob 180 

d 15 degrees counter 

clockwise (3) & (4). Enter the 

desired new combination. 

 

Turn the wing knob 15 degrees 

clockwise. The new 

combination is now set. 

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Please Note: It is recommended that 

nothing be plugged into the Auxiliary 

outlet while charging

 

What is the “Power Manager” doing? 

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Part #: 031-9405 

03/13/2012 

MDM Network Ready 

Laptop Cart 

USER GUIDE 

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