First of all I am pleased with the entire experience, but since the specs shown on the listing are a bit confusing and don't entirely match what I received, I thought some clarification is in order.I'm quite familiar with the Precision 5530 as I have a company-issued laptop for work. It's a serious workstation-spec laptop for people who need higher performance, such as software developers and graphics design folks.I received this very well packaged in high-strength bubble packaging. It came with an aftermarket 130W AC adapter which matches the spec for the Precision 5530. The case shows Precision 5530 clearly stamped on the bottom where the memory upgrade panel resides.The listing is a wee bit confusing because it says the SSD is 512gb and also says it is 1tb. What I received was 1tb so that matched what I expected.Windows settings / About shows that this is a Precision 7730. Comparing the two shows that the Precision 7730 is a slightly newer spec than the Precision 5530 - they are nearly identical except that the 7730 has the NVidia Quadro P1000 graphics adapter (which I would prefer anyway) and (as the listing suggests) is actually a 6-core i7 rather than the 4-core which is the basis of the 5530. In any case I'm not complaining. Another advantage of the 7730 is that it has a direct HDMI connection in addition to USB-C, two USB-A and audio jack - with the 5530 you need the (expensive) USB-C docking adapter with the (also expensive) high current power brick to get a second monitor on HDMI.This all adds up to a very solid performing workstation-spec laptop which is good for software development, graphics design and other computing-intensive applications.