Installed Kingston RAM SO-DIMM 32GB ddr5-4800 (kvr48s40bd8-32), everything worked. The first start was a little long, then it began to load quickly.
NVMe connector works in PCIe mode 3.0x2. The PCIe 4.0x4 drive is cut to about 2 GB/s. But it's not scary.
When ordering, be sure to indicate which network adapter plug you need. I came with an American fork. Had to additionally request a European adapter. The seller went to meet and agreed to send. Thank him very much for this!
Also be sure to write to the seller, if you need a SATA cable, it is not included, you need to pay extra separately. There is practically no room for NVMe radiator when installing the 2.5 disc. But I managed to install a copper plate with a thickness of 1mm. using a heat seal of 0.5mm. Only then the lid closed normally. Satisfied with the purchase.