Retroflag GPi Case 2 for Raspberry Pi CM4, with 3.0” LCD and 4000mAh Li-on rechargeable battery, Type C charging port and Pi easy install with Carrying Bag

I have built a couple raspberry pi retro gaming systems now. Lately I have seen a lot of handheld systems. The reviews seemed ify at best but i loved the idea. I was excited to get this and set it up. I have been playing with it for a few weeks now and it is exactly what I was hoping for!A couple things to note if you go with this:1. The SD card holder slides down to unlock and hinges open and close. Then slides back up to lock. For me, the instructions weren't clear enough and i thought it just hinged open and close.2. The system does not play on a tv via the dock and the onboard speaker doesn't work until you set up safe shutdown. I didn't know that and panicked when i had it off the dock and didn't hear sound and when i had it on the dock and the tv didn't display anything.I used Retropie for my setup (as it is what i have used in the past)

To be sure it works well for you, you need a Raspberry Pi Compute Module 4, 2GB RAM (minimum), lite (no EMMC storage). Recalbox works the best. I couldn’t get sound working on RetroPie or Batocera.There are only L1 and R1 shoulder buttons, no L2 and R2 triggers, so it won’t be good for PS, PS2, etc.Quality control seems to be an issue. The first one I received had a dead pixel and a constant whine. I also got one on eBay that arrived completely dead.It’s very easy to assemble. Looks great and could pass as an original Game Boy at a distance. Gameplay performance is excellent in Recalbox. I’m very happy with it. Great value.

UPDATE:Turns out my GPi Case 2 must be defective. The LCD screen simply doesn't work. I finally was able to buy a CM4 Lite (for a gigantic markup), so at long last, I could setup this handheld. But after wasting many, MANY hours trying various OS's, installing all the patches, and trying every conceivable system configuration, the GPi screen remains a (backlit) black void. Ironically the dock works alright, so if I merely wanted a regular Raspberry Pi4 to play games on a TV then I might be set.In fact, I tried so many different setup configurations for this thing that the horrendous little metal gate which holds the SD card in place just snapped right off. That gate had felt precariously flimsy and just awful to work with anyway, but I was still surprised to see it break off completely. I suppose I should take this as a sign from the Heavens to just let this damn project go. Also, I haven't been able to get the back plate off of my device because two of five screws appear to have been stripped. Awesome.So yeah, I'm feeling some serious buyers remorse on this one. I can't believe that I ordered the GPi Case 2 a full TWO YEARS AGO, have spent close to $300 on components—thanks to chip shortages/inflated Pi prices and Retroflag's own deceptive marketing copy leading me to buy the wrong Pi at first—and I have basically nothing to show for it. Well, I suppose I do have a stylish Game Boy-themed paperweight...The the GPi Case 2 is a waste of money, but it's also a huge waste of one's time and effort. Do not recommend.ORIGINAL REVIEW:Retroflag claims that this product supports all versions of the RaspberryPi Compute Module 4 and simply "recommends the CM4 Lite with WiFi". At best, this is pretty misleading, but I'd just call it lying. If, like me, you bought a model of CM4 other than the Lite, you're probably gonna have a bad time.You absolutely need a CM4 Lite because the other models have internal flash memory, and internal memory means the Pi cannot use an SD card. So unless you have an IO/base board, you won't be able to access the internal memory on your Pi to set up the device. The GPi Case 2 advertises that no tools are required—and if you have a CM4 Lite, that's true. But if you bought any other CM4 model, then the one tool you will definitely need is an IO board for setup.So after buying the GPi Case 2 and finally managing to snag a CM4 like 8 months later, I am $150 in with nothing to show for it. Now I'll need to spend another $30 or so on an IO board, and only because Retroflag falsely advertised the product requirements.

This is a great product. Make sure you get the Pi without onboard memory, or it won't work with this.

It's pretty okay. The plastic feels durable and the screen is lovely. The power of a Pi CM4 is amazing in this form factor. HOWEVER: Installation is rough (best do the SD card and Pi totally unassembled, and I Emailed the company asking if I could buy a second back cover so I could add heat sink vents and never got a reply.Worst, though, is the D pad. It's TINY. So small that I cannot enjoy the power and form factor of the handheld. It's going to live in a drawer forever now.