Overall this pc is an awesome value and works great. If you got this to use in a production environment which it was intended, then by all means, you can use it out of the box.Having said that, here are a few things to consider. Please remember this is only to share my own experience and by no means a professional advice. My experience might not be typical and your might be different.But... if you are a little OC like me about these things, please read on....- The adapter is not original and not recognized by the computer. You won't see any error messages on Windows for this but BIOS tells you that if you perform diagnostics. Hence BIOS is taking measures to limit the performance of this computer to avoid damage. As a result the CPU gets stuck at 0.79GHz.  Check the Task Manager > Performance to see the CPU frequency.  If you want the regular 3.4 GHz performance from this device keep reading...- Came with an additional 802.11N Wifi adapter, good quality keyboard and mouse that I was not expecting. Thank you !!!- You need a Dell 65W adapter. If you get an original Dell adapter with a big connector like the one I found cheap, you'd want to get a tip converter. Search Amazon for "7.4 to 4.5mm power adapter tip converter". Or you can get a power adapter like this one on Amazon eliminating the need for a tip converter:  "New Genuine OEM Original Dell 65W 4.5mm Tip Replacement AC adapter for Dell Inspiron 5551, Inspiron 5555, Inspiron 5558, Inspiron 5755, Inspiron 5758, Inspiron 7348, Inspiron 7558."- Please consider checking Dell support website and update the BIOS/firmware and drivers. It is detected and updated accordingly. Good job, Dell !!- "If and only if" using a genuine Dell 65W adapter does not fix the CPU getting stuck at 0.79GHz, follow the Dell support article below to fix. You will disconnect the battery and hold the power button for 15 secs. Then put the battery back in:https://www.dell.com/support/kbdoc/en-us/000145125/processor-speed-limited-to-0-79ghz-800mhzUpgraded the RAM to 16GB (2x8GB) and put in an SSD card of size 512GB. There is a socket for the card SSD under the bulky old style SSD. Luckily the graphics on this device support 4K native resolution and works seamless and very very smoothly even at the 0.79Ghz CPU. It works very well with my 4K TV using a logitech wireless keyboard with touchpad. Gamers might have their own graphics requirements so I won't get into that.Now it is a 5 star pc but I wanted to give 4 star to bring attention to the above which should not be a big deal really. If you have more budget you could upgrade the RAM to even 32GB (2x16GB DDR4 laptop RAM) and it's worth it.Hope this helps.