Amazon lumps reviews for multiple vendors/refurbishers under the same  product listing, so unless the review mentions the vendor, the comments regarding condition are not very useful. My unit was an HP 8300 Elite with Intel Core i5-3470 3.2GHz Quad-Core, 8GB RAM, and 500GB hard drive. The vendor in my case was Microbee. I could not be more satisfied with the condition of the unit. It was covered in a skin-tight shrink-wrap plastic and protected by a molded bubble wrap shell. The condition beneath the shrink covering looked perfect. No dents or any case scratches were evident at all. Popping the cover, the interior was almost dust-free, including the fans. It appeared to be brand new. The unit powered up quietly with an activated copy of Windows 10 Pro. The license was not an electronic license, but a volume license with an activation key (which was not provided). I linked the license to my Microsoft account, so hopefully will not have reactivation issues if I move to an SSD in the future. I called Microbee and and a very knowledgeable young lady stated they had recently gone to the volume licensing scheme so as to provide the OS pre-activated. She was unable to provide the activation key.I checked the run time on the 500Gb hard drive. It worked out to 2.5 years of continuous run time. That's high-mileage, but nowhere near as bad as the 5 year numbers I have seen in other reviews. The only other issue is that the optical drive was DVD-ROM only, not Read-Write as advertised. Microbee offered a partial-refund to address the issue. Part of the fault here is with Amazon for aggregating the same product with multiple vendors offering slightly different product specs. I was so pleased with the overall condition of the unit, I did not bother to pursue the refund as a new RW DVD drive is only 12.00 or so if I decide I can't live without it. I haven't burned a DVD in years.The 8Gb of memory was split across two of the four memory slots, leaving space for future upgrades, which was very nice. The oddball HP "DisplayPort" is a weird beast. It is essentially an HDMI port in a proprietary HP form factor. It does carry digital audio, like an HDMI port. An adapter is needed to use the port with a standard HDMI cable. Fortunately, I had an adapter in my parts box from a work HP laptop, so I was able to connect it to an older DVI monitor with the DisplayPort adapter and an HDMI to DVI cable. I also used the the VGA analog display port for a second monitor running extended desktops. The integrated video on the motherboard/processor worked just fine with the arrangement.The BIOS in my unit had NEVER been updated. I downloaded the most recent versions from HP. It is necessary to upgrade first to version v02.99 Rev.A before upgrading to the latest 00.03.06 Rev.A. If you don't first upgrade to the intermediate version, the upgrade to the latest rev. will fail. The latest BIOS seems to trigger several behind-the-scenes Windows 10 updatess and does update the Intel microcode for the processor, so performing the BIOS updates is a must.All-in-all, the unit represents an exceptional value for a second or compact computer system. I use mine for an amateur radio station machine, where the large number of USB ports and the single RS-232 serial port are perfect for interfacing to radios and other accessories. There is plenty of horsepower to run DSP software used to decode various digital radio modes. I also run a spectrum analyzer/panadapter software package that requires a powerful processor. The unit handles it easily, idling at 27% utilization.