From Canakit: https://www.canakit.com/raspberry-pi-500-desktop-kit.html
I set it up but didn't do much on it besides download kiwix and then give up quickly.
I couldn't wipe the SD so you'll need to wipe it for your own use.
Features
2.4GHz quad-core 64-bit Arm Cortex-A76 CPU
8GB SDRAM
Built in aluminum heat sink
Sleek form factor
Access to common external ports including GPIO, 2 x USB 3.0, 1 x USB 2.0, Gigabit Ethernet
The Raspberry Pi 500 is a fast, powerful computer integrated into a high-quality keyboard, delivering the ultimate compact PC experience. Equipped with the same quad-core 64-bit Arm processor and RP1 I/O controller as the Raspberry Pi 5, it also includes a built-in aluminum heatsink for enhanced thermal performance. This ensures smooth operation even under heavy workloads while supporting stunning dual 4K display output.
The Pi 500 Desktop Kit includes the Pi 500 unit along with typically required essentials such as a 32GB pre-loaded MicroSD card, Mouse, PD Power Supply, MicroHDMI Cable and the Raspberry Pi Beginners Guide. The PI 500 unit only is available on its own here.
Includes:
Raspberry Pi 500
Raspberry Pi Mouse
Raspberry Pi 32GB microSD Card (Pre-Loaded)
PD Power Supply for Raspberry Pi 5
MicroHDMI to HDMI Cable
Official Raspberry Pi Beginner's Guide