I can't help but think that people who read this review would think very little of this machine, because NBC remarked exclusively on a lower-specced unit they received without revealing all the information to readers, which isn't the first time and won't certainly be the last.
Potential buyers, please be aware that the Latitude 5580 can also be equipped with an optional 92 Whr internal battery, presumably allowing an incredibly long runtime of ~17 hours with a dual-core Kaby Lake, and a still very strong ~10 hours with an i7 HQ.
Furthermore, many technical features aren't even mentioned in this review, but are currently available with this laptop. Windows Hello capable IR camera, GT 940MX dGPU, and IPS touch screen using OTP technology are just a few of those options. Fingerprint reader is also a legitimate one that focuses on security, not the cheap Synaptics scanner, which is designed merely for a convenient sign-in.
And just a warning to many users, like me, who actually do fully utilize the sequential read/write speeds of an NVMe SSD for work all the time, the M.2-2280 slot's PCIe 3.0 interface is still limited to x2 lanes across most Latitudes just like most other business lines.
Check the official manual/specifications PDF for further details:
http://topics-cdn.dell.com/pdf/latitude-15-5580-laptop_Owner's%20Manual_en-us.pdf