The advertising for this is terrible. This is the best kept secret on Amazon - quite a lovely machine IMO. But they've left out / misprinted some important details:1) This is NOT a "Linux OS" system as stated! It's a barebones system - you can put whatever you want on it. I threw Windows 11 on this thing and it's great.2) To that point, yes, I said Windows 11. Yes, this machine has the TPM chip that Windows 11 requires. The BIOS even has a "Disable TPM" option, so I know for sure that it has the chip.3) It's a Shuttle fanless. I've been using these for over a decade. Never any problems. I turn my computer on and off every single day and use it for several hours. I'm typing this on my four year old Shuttle. My previous model was five years old, and I still use it as a backup. But in two years, Windows 10 will supposedly no longer by supported, so I figured I should get ahead of the game and upgrade.4) Did I mention it's fanless? Stick an NVMe SSD in there, and it makes zero noise. Trust me, you don't know the beauty of a completely silent PC until you've used one. The little blue power LED is the only way you'd know it's on if you weren't looking at the screen.5) Installing the RAM and SSD is very easy. I've upgraded laptops before, and it's a bit of a nightmare to open them up. But these Shuttles are very well thought out. Two screws and slide off the outer case, one screw and move the inner bracket. That's it. Slide your RAM in at an angle (just like a laptop), then push down until the two tabs click. Insert the SSD (it will also pop up at an angle), then hold it down, and put in the screw (use one of the two silver screws that come with the Shuttle). Done.6) I grabbed a 500GB Crucial NVMe SSD and one stick of 16GB Crucial RAM. The documentation says that 16GB is the max, so I just bought one 16GB instead of two 8GB and put it in the lower slot. Works like a charm.7) Is this good for playing the latest video games? Of course not. It's a Celeron, not a Core i5. I do email, Internet browsing, listen to music, watch YouTube, do basic graphics with Paint and GIMP, use Office 2021, etc. The Celeron N4505 (dual-core, 2GHz), combined with the NVMe SSD and DDR4 RAM, is fine for all this.8) One note: I bought a USB Ethernet adapter for the installation and then just kept using it. Windows drivers don't recognize the onboard Ethernet controller. Shuttle has a drivers disk you can install from, but I find the USB adapter works just fine. TP-Link sells one here for about $10.I hope this review clarifies the actual specs and capabilities of this machine.