The invoice and picture of the label are both attached.
The unit I have is different than the one pictured in the link you sent. I have the SER5 MAX-L-24500EJ0W64PRO-DP/XA with the AMD Ryzen 7 6800U processor, not the 5800. When I opened it up it looked like the unit in the Beelink-SE8-SER9pro-user-manual with the heat sink on top of the 2 slots for the SSDs. No slots for memory were visible on the main board. The back side of the mainboard had a fan on top of what I believe was the processor, again, no obvious slots for memory.
