Ever wondered what those four-digit model numbers used on Dell Latitude devices (for example “Latitude 7275”) mean? This helpful guide should answer your questions.
This shows the range the device belongs to. 3 is used the entry level “Essential” models, 5 on the mid range “Mainstream”, and 7 the high end “Premium” devices. Also referred to as the 3000, 5000, and 7000 series.
The second number indicates the screen size. A 2 means the screen is roughly 12” diagonal, 3 means 13”, 4 means 14” and so on. For example the Latitude 7280 has a 12.5” inch screen
The third digit indicates the generation. At time of writing (Jan 2017) we’re currently seeing the tail of the generation 7 models (primarily based on the Intel Skylake chipsets), and the start of the generation 8 (primarily “Kaby Lake” but some Skylake devices will be available for Windows 7 compatibility)being released. Models are roughly equivalent between generations- for example the 7270 is superseded by the 7280 both are premium laptops with roughly 12 inch screens.
The final digit currently denotes the type of device. A 0 indicates a traditional laptop, a 5 indicates a device with a detachable keyboard (the style of the Microsoft Surface Pro)- for example the Latitude 7275, and a 9 indicates the new convertible, fold-back, device (similar in style to the Lenovo Yoga devices).