编辑 Dell Latitude E5550-5550

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The Dell Latitude E5550 is a 15-inch business laptop. It was first released in late 2014 with a 4th-generation Intel processor and subsequently updated in early 2015 with a 5th-generation Intel processor.

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== Background and Identification ==

The Dell Latitude E5550 is a business laptop with a 15-inch screen. It was originally released in late 2014 with a 4th-generation Intel processor inside. In early 2015, Dell gave the laptop a small update adding 5th-generation Intel processors and increasing the maximum memory capacity. The exterior of the laptop is black (the definitive color of a serious business laptop) and the lid has a rubberized texture. The middle of the keyboard sports a blue and black trackpoint with buttons above the trackpad that you can press with your thumbs while using the nub for cursor movement.

Removing the bottom cover of the E5550 requires loosening six screws and gives you access to all the components inside. The early versions with 4th-gen. processors can accept up to 8 GB of memory in the two upgradeable slots, whereas the later 5th-generation-equipped models can take up to 16 GB. The standard 2.5-inch drive bay nearby can accept either a SATA hard drive or SSD. Likewise, the battery is removable and held down with a few screws (although reviewers did point out that the battery is somewhat harder to remove than on previous models which had an externally removable battery).

You can identify this laptop by looking at the bottom left corner of the keyboard where Dell has kindly printed the model name “Latitude E5550.” If you need the service tag or service code (a.k.a. Dell’s serial number) it will be located on a sticker on the bottom of the device. If you want to find out whether your laptop has a 4th- or 5th-generation processor, you can find the exact processor model as shown in this [link|https://www.howtogeek.com/413942/how-to-see-what-cpu-is-in-your-pc-and-how-fast-it-is/|How-To-Geek guide] for Windows or using the “lscpu” command on Linux.

== Technical Specifications ==

***Processor***

* 4th-generation Intel Core i3/i5
* or 5th-generation Intel Core i3/i5/i7

***Memory***

* 4th-gen. processor: up to 8 GB
* 5th-gen. processor: up to 16 GB
* Two SO-DIMM slots
* DDR3L at 1600 MHz

***Storage***

* Hard drive or SSD
** 2.5-inch form factor
** SATA interface

***Graphics***

* 4th-gen. processor: Intel HD Graphics 4400 only
* 5th-gen. processor:
** Intel HD Graphics 5500
** and an Nvidia N15-GM or N15-GT (on some models only)

***Display***

* 15.6 inches (39.6 cm) on the diagonal
* 1366x768 pixels or 1920x1080 pixels
* 60 Hz refresh rate
* Touchscreen support on some configurations

***Connections***

* Three USB 3.0 ports
* HDMI port
* VGA video output
* Docking port
* 5-gigabit Ethernet port
* SD card reader
* 3.5 mm headphone/microphone combo jack
* (Optional) Micro SIM card slot

***Wireless***

* 802.11 Wi-Fi
* Bluetooth 4.0
* WWAN (cellular support) on models with a SIM card slot

== Additional Information ==

[link|https://www.dell.com/en-us/work/shop/cty/pdp/spd/latitude-e5550-laptop|Dell Latitude E5550 official product page]

[link|https://www.dell.com/support/home/en-us/product-support/product/latitude-e5550-laptop/overview|Latitude E5550 support page]

[link|https://dl.dell.com/topicspdf/latitude-e5550-laptop_owners-manual_en-us.pdf|Latitude E5550 user’s manual] (with disassembly instructions)

[link|https://www.notebookcheck.net/Dell-Latitude-E5550-Notebook-Review.131834.0.html|Dell Latitude E5550 review by NotebookCheck]

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