Power adapter requirements of Latitude 5550 (option 1)
NOTE:If you did not purchase the Dell-branded power adapter that is recommended for your computer, ensure that the power adapter you use meets the following requirements.
The following table lists the power adapter requirements for your Latitude 5550.
Table 1. Power adapter requirementsThe following table lists the power adapter requirements for your Latitude 5550.
Description
Value
Power that is required from a power adapter to achieve optimal performance
60 W
Power that charges the computer at a slower speed
NOTE:A warning message may appear informing you about the use of a lower-powered adapter and slower charging speed.
Less than 60 W
Minimum power that is required from a power adapter to operate the computer and charge the battery
NOTE:A warning message appears informing you about the use of a lower-powered adapter and slower charging speed.
27 W
USB Power Delivery (PD) fast charging
Supported
ExpressCharge mode
Supported
NOTE:Ensure that the computer with a 42 Wh battery is connected to a 65 W power adapter for this feature to be supported.
NOTE:ExpressCharge mode must also be enabled in the BIOS Setup screen. Select
Power >
Battery Configuration >
ExpressCharge, then press
Enter.
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