Pros: Easy to install HDD (up to 2TB). Connect cameras, turn it on, step through easy menus to setup and your off and running. Maybe 30 min. total time from box to recording.

Cons: None that I have found so far.

Overall Review: Works great and does more than I could ask for at the price point. Upgraded from an internal PCI DVR card to this stand alone unit.

Pros: Very good daytime color picture, lots of adjustment, both housing and zoom/focus

Cons: I bought one of these when the rebate was on it. Bought another some time later after rebate was over. Not the same performance. Same housing, etc. Performance between the two is like night and day. No pun intended. The original purchase has very grainy night time IR picture, acceptable but not as good as I would expect in the price range. I am about sick of the rebate games. Note to self, there's a reason for the incentive, and I found that a lot of times it's because the vendor is trying to unload a lesser quality product and make interest off my money while they hold it for "6 - 8 weeks".

Overall Review: You pays your money and you takes your chances sometimes.

Overall Review: Bought this for my 20 something son to use for school. I upgraded the HDD to a 1TB SSD when I received it. Other than that, it meets my expectations and I feel like I got a fair deal.

Pros: As described. Working great so far.

Overall Review: Goo purchase.

Pros: Looks brand new. Running Win 10 Pro on one drive and ESXi 6.5 Enterprise on a different drive depending on what I want to do at the moment. Updated LSI SAS controller to the latest BIOS and Firmware, updated to the latest motherboard HP BIOS. This thing must have 20 SAS / SATA ports on the motherboard. Packaging was awesome, encased in foam all around it when it arrived. Amazing how new this workstation looks for it's age. Tons of replacement parts available on the web. 1125 watt PSU! Nice.

Cons: The only PITA was the fact that the HP DVD-ROM drive was defective. Not completely dead, just flaky and failing. Wasted a couple of hours troubleshooting because it wasn't apparent in that Win 10 Pro install DVD would boot, start extracting files, then freeze. Reboot, then it would do something else unusual. Nothing consistent to immediately pin it down. With a refurbished computer it could be anything. I finally got a failure message that indicated the DVD-ROM drive was the problem. Fortunately I had a brand new ASUS spare DVD-ROM drive on the shelf. Changed out the HP DVD drive for the ASUS, rebooted into Win 10 install DVD and took off, cooking with gas. Installed a few needed Win 10 controller drivers and away we went. So far, running like a champ.

Overall Review: This is a fun machine. I would rather be using this than a new DIY build that would probably cost about the same and not have near the horse power / CPU cores, and dink with overclocking, LED's in the case, blah, blah. Smoke'n machine. I know I over provisioned for an ESXi lab, and way more resources than I could ever consume in Wn 10, but who cares. It's fun as h3ll to see app installs zip across the screen so fast you can hardly blink. It's very stable,which makes sense since it was designed to be a professional / business workstation, e.g. there are not a lot of parameters to set in the BIOS, and you don't need to anyway.

Pros: Got what I expected. Everything worked out of the box. Activation went off with a hitch. Threw the parrallel / serial port PCI card in the trash. Upgraded processor to E8500 Duo Core, upgraded HDD to 400GB, imaged the 80GB drive, now use the 80GB HDD for a backup drive. Threw the 4 512MB sticks of RAM in the trash and dropped in 2 sticks of 2GB PC2-6400 RAM. All without a hitch. fast little machine now. 2 open SATA ports for adding additional drives. Super bargain with the rebate. Came with keyboard, mouse, power cord, instruction sheet for activation. Well packaged. No shipping damage.

Cons: All 4 RAM slots are full with 512MB sticks. Not really a con as I got what is advertised, just a bummer to not have 2 empty slots for an upgrade.