This is the Progressive Peripherals and Software Zeus '040 Accelerator for the Amiga 2000
It's a fairly powerful 68040 accelerator that is clocked at 33Mhz and has 64MB of 60ns 32-bit Fast RAM.
Sysinfo says it's around 33% faster than the 25Mhz Amiga 4000.
The RAM is mapped in such a way that 2MB is in the normal RAM space that ZII RAM occupies, meaning the card is fast right at bootup without needing to do the secondary soft reboot that other accelerators did. To activate the card fully, you run a command Init040 - normally one of the first things in your startup sequence - and this sets the cheches, adds in the rest of the RAM, and remaps Kickstart to Fast RAM, giving the card it's impressive speed.
Once you do this, the system reports 60MB of Fast RAM in one banks, and 1MB Fast Ram in a different bank (which I think is the 2MB initial RAM minus the space used to remap the firmware to FastRAM)
The card has another nice feature - it allows for 68000 fallback though software or a physical hardware jumper.
The card has one major flaw - I was unable to get the onboard SCSI controller to function. If enabled (jumper A3) the system either fails to start or it gives an error
DH0:Software Failure #80000004I found others online with the issue who apparently resolved it by using PFS3 or by replacing the SCSI firmware onboard with a newly written Warpengine derived retrofit. I also suspect that the issue could be that the card lacks termination packs, but I am selling this under the assumption that the SCSI may be defective.
The card condition is overall well used but good. A couple SIMM socket tabs are broken/bent but the SIMMS seem to stay in place just fine.
It comes with the original manual and a fresh copy of the software on disk.