The Dell Latitude E5440 is a great mid-range business notebook and has a solid build in our personal experience. Everything works perfectly under Windows (which it was designed for) and only loses access to the internal Wi-Fi and has a minor Bluetooth connectivity issue on macOS. Sierra users will see a battery indicator stating the battery is not being charged even when it is plugged in so we recommend that you update to High Sierra if you wish to receive continued support. The WiFi issue can be permanently fixed using swapping out the internal card or by adding a USB WiFi adapter. For the intermittent Bluetooth issues, use a USB Bluetooth adapter or start the HackBook with a smartphone connected by USB cable. If your smartphone is Android, take advantage of USB Tethering. If you have small kids that love to play online games, the Dell Latitude E5440 HackBook is perfect for them to learn on while keeping your actual MacBook safe from the occasional drops and spills.
The battery is very light so the E5440 weight does not increase by much to make mobile use easier. With the power features of macOS High Sierra and later, we notice that the battery life last longer in the day than using Windows so if you occasionally need to use Windows, decide if you will be running Windows directly by dual-booting or launching it from within a VirtualBox session. Please note that Sierra has an issue which you can ignore and attempt to patch on your own as we no longer provide any support it.
The keyboard and supported trackpad are comfortable, useable and are inexpensive to replace when damaged. When damages occur, you may want to consider upgrading to the backlight version. A special feature of this version is the ability to shut off after 10 seconds of inactivity to keep from draining your battery.
There are 3 (one USB 3.0 on each side and USB 2.0 the rear) USB ports, an optical drive and SD Card Reader. The optical drive can be removed to add a second hard drive (7mm is recommended) to help with storage or multi-booting. We recommend keeping the optical drive (to help hardware that ships with CDs) and only swap permanently if the drive fails.
The E5440 comes with either the (lower resolution) Intel HD Graphics 4400 or the (higher resolution) Nvidia GeForce GT 720M. The Intel HD Graphics 4400 GPU is what we typically use and advise for better stability with multiple OS.
The E5440 is widely available as new, used, certified refurbished and for parts. New systems will have the latest CPU and firmware included while refurbished will have a mixture of parts and vinyl to cover blemishes. Used is helpful for testing or when parts are hard to find or overpriced.