First, I suspect, since there are a number of 'Certified Refurbished' brokers offering these machines, that the add for these machines is rather generic and somewhat fluid. It may be worth taking the time before ordering to check with the specific vendor to verify system specs.The item I ordered was from Blair Technology Group. It is a Dell Optiplex 7010 in a desktop enclosure, not a small form factor machine - but that's OK for my purposes. It came with 16 GB of RAM, a 2 TB hard drive, and an Intel i5 - 3470 quad core CPU. Windows 10 was pre-installed on the hard drive. A USB connected keyboard and mouse were included in the shipment, they will gather dust in the closet.After opening the box I opened the unit to verify components, then zipped everything back up and plugged in an old 1280 x 1024 HP monitor via the VGA port. The machine came up on Win 10 quickly without any issues at all. After completing the personalization steps I checked various hardware components, in particular audio I/O. Everything worked. I shutdown the machine and then turned it back on, hit F12 to enter UEFI/BIOS mode and found the machine was set to 'Legacy' (BIOS mode) and non-secure boot. This configuration will work for most users - especially those that will bring up Win 10 for personal use and have no intention of doing any other major customization.I installed a GeForce GTX 710 card in the half height card slots (there are four in the desktop unlike the two in the SFF 7010). Connected both monitors, set the system to use UEFI and configured the boot devices to see an Ubuntu 16.04 LTS iso image on a USB drive. Installed Ubuntu 16.04 LTS on a spare 300 GB drive I had (pulling the 2 TB drive out of the machine - since it uses an MBR to boot it is kinda lost in the UEFI environment, it will be reused eventually).This thing runs cleanly on Ubuntu 16.04 with a handful of USB hard drives connected and the video card installed. The memory is the biggest bonus since I run a photo editing tool written in Javascript (big memory hog). All in all I'm pleased. Easy to use right out of the box - easy to customize.