Amlogic A311D2 Single Board Computer-khadas VIM4 with 3.2 Tops NPU with Active Cooling Kit Supports 4K UI and HDMI Input, 4 Display Interfaces, LAN WiFi 6&BT5.1, 8GB 64bit LPDDR4X 2016MHz

This is a powerful SBC. It was very easy to set up thanks to the Oowow software installer. I chose the Ubuntu with desktop. It didn't come with a working browser, so after a quick google search, open the terminal and download firefox. Job done. Video playback is excellent on my 1080p monitor. I used a Raspberry Pi USB C 5V 3A power supply to power it and a keyboard and mouse over the USB 2 port. The fan on the cooler is noticeable every now and then during normal use, it may be quieter when I get a case. When I have some free time I am going to have a look at the Android option for the Vim4. Very happy with my purchase.

Speed is comparable to the Nvidia Shiled. No Dolby Vision. HDR is horrible! Very Buggy! For age verification games like real racing 3, you need a touch screen to enter your credentials. The functionality of this item is incredible. Altough a bit pricey, this device would pair perfectly with a touch screen. I tested it on a regular 1080p HDR monitor. This device can be used for work, gaming and streaming. I only tested it on Android. Button mapping is easy. Editing is a breeze. Digital signage is very easy. I just wish this had Dolby Vision and Dolby Atmos with widevine L1. Android is complicated and not desktop or gaming ready. Dex is the closest thing to being desktop ready and for gaming. Android games lack built in controller support. Some people just want an Android device they could plug in, search, stream & listen in the best quality and game without a hitch. Khadas isn't far off with any of their android capable devices. It takes some learing curves to get it to operate on a regular desktop monitor. For some it's worth it or good enough. For me I need something more like Dex. It just works! i say dex because it crushes Nvidia Shield and BlueStacks. The only things you can game ok on. Dex beats them all especially if you have a highend samsung device.

didn't get the chance to play around too much yet, but sw installation and support are very reasonable at this time.

Only compact single board with HDMI inputVery easy to setup via OOWOWGreat SBC for the money

HDMI input is cool? yet if you connect an hdmi camera, there is no support to make it work. Has SSD interface, connected SSD drive, no way to make it work. Basically, on paper it is a super cool SBC, but you can't get anything useful out of it.

Bought this SBC and not Pi4 because of the advertised specs which are by far much powerful (of course the price reflects this).Installed Ubuntu with no issues. Excellent.Connected Keyboard, Mouse and Monitor. Works just fine.Tried connecting a newly bought CSI camera. Nothing. According to seller this feature is still under development..Tried connecting a different camera using the micro HDMI port. Nothing. According to seller this feature is also under development.Basically you can only use a USB camera... Does not work for me (specific project).Seller took responsibility and promised a full refund (including shipping cost).Seller has also started maintaining a FAQ which is a nice touch.

I own two. Both behave the same.Quite powerful and lots of fun.Each time I pull power it won't boot the freshly installed/configured OS on the eMMC. So, unreliable after power unplugged. Will boot OS if I keep it plugged in and soft power off.I will probably try to boot differently since these would never see the internet where I plan to use them.They will not see the internet for a few reasons. The first one is that its bootloader is not open source and I don't see a way of getting code nor replacing oowow. Opaque firmware is one of the highest risks. So, if these get deployed, they will be hidden inside a firewalled vlan (which it is unaware) and communicating only with local subnet.With "trust but verify" as the only smart choice; I cannot trust as I cannot verify.

As far as SBCs go while the specs on paper sound nice it's largely a niche product when you could get more well rounded products for around the same price, for example the OS selection is pretty bland from a small selection of Linux distros, android, or a coreelec (TV box distro) a lot of the use cases I could have had for it were either not compatible, didn't work well. For the price not counting the necessary accessories (power, heat-sink) was not worth it despite the useful features like host-less flashing of the OS.