That's a great idea, I might do the same.

If you want cheap and easy solution go to hardware store and buy two galvanised steel perforated plates 80x40x2mm. Two of them give perfect weight increase to A600GS, they fit in the middle of the bottom part of the case and they won't rust. Then isolate them with electrical tape or put some isolator between the bottom of the daughter board and those plates. The plates are easily fixed to the bottom of the case with a glue gun and can be easily removed without any damage. 15 minutes of work

Good luck

I think the case is "ok" ... I did some rework with tape to prevent the metal plates from rumbling around and hold the audio jack in place ...

I already started to design a case with integrated 3,5" Floppy drive but it´s far from complete 

I think A600GS case is very well designed, very well molded, quality plastic etc. I would not change it I just made some modifications and I installed two 2mm insulated metal plates to act as weights underneath the daughter board and now is very stable on the desk and cable movement does not move the device anymore.
 

The back plate is rattling because it is not tall and wide enough to fit the grooves in the top and bottom parts of the case. I don't know if it is on purpose because of the case moulding variations / orangepi+daughter board placement variations or who knows why. I personally installed passive dual side heatsink and made a custom back side metal grill so the hot air can escape. If you need any help regarding modeling or making custom parts, let me know. CAD/CAM is what I do. I would consider helping you design what you need for free.

Sorry for the problems described by the previous speaker, yes indeed the early versions had a electrical bug and the firmware had it's child illnesses, but that has changed.

I got my ZZ9000 from a production batch last year with latest firmware 1.13. and for me it was a true easy plug'n'play experience. Installed the card, P96, Genesis on my A4000T and all works in less than halfe an hour. RTG inclusive native put through and automatic flickerxing like a charm, 256MB autoconfig RAM expansion, Ethernet not the fastest but ok for Amiga needs and much faster than with a dialup modem. The only problem which still exists is the USB port, couldn't get any memory stick to work, at least not automounting partitions.

Can't tell about the Sound expansion, as I don't have it.

For me it was the best deal for my old A4000T, solved 3 problems out of the box for me:
1. Native put through and flickerfixing, finally could retire my CRT
2. Lack of RAM, 256MB is a nice addition
3. LAN connection, modem retired

About, the problem described updating the firmware by the previous speaker:
Upating is done very easy by copying the new BOOT.bin to the SD card, NEVER EVER TRY TO DO THIS ON A WINDOWS SYSTEM, as Windows screws up the file, it obviously doesn't like when you copy a file named "BOOT.bin" into the root of any drive. So best to download and copy the new firmware updates on a Linux system.

Hi, I have a mostly stock NTSC 25mhz A3000 with a SCSI2SD fitted. I was looking into an RGBtoHDMI for it when I came across the ZZ9000.

I would use it mainly for the HDMI output for ECS modes and for the extra RAM. The RTG modes would be nice to explore, particularly with Shapeshifter for Mac II color emulation.

The USB stick support and the Ethernet support would all be useful as well.

I've seen critical reviews of the ZZ9000, often comparing it to other USB and Ethernet solutions which are faster. I'm not very concerned with speed (within reason) but I do want something reliable.

I'd like to understand how reliably the ZZ9000 performs these tasks:

• HDMI output of NTSC ECS modes
• RTG graphics
• Extra RAM
• Ethernet
• USB thumb drive support

Thanks for any experiences you can share.

My experiences with a A4000 and one of these boards:

The short version first. Had one, couldn’t get it to work properly. Needed a Voltage fix (Early version). Sold it.

The long version;

Bought one of these a couple of years back. Tried to get this thing to work on my A4000 desktop rig. Only thing I could get working was native video via the HDMI.
What I struggled to get working was the RTG modes, the Network interface wouldn’t be seen. Forget about the USB. Apparently this was (And maybe still) a pipe dream?

MNT as far as I am aware are not doing much with this card. I tried updating to the latest firmware (Last release a year or 2 ago). No dice!

There is a Sound module available for it as well. Not heard much from other users on this.

There is now something called the ZZ3660 (Must get this name right, or the Sheldon’s will be out in force 🙄 ), which is an all in one accelerator, HDMI, network etc. etc.. But this is still in development with Beta firmware.