Lenovo Rev

3 models from 3 hardware reports. 2 take more memory, 1 has it all soldered.

ModelMemoryMost seenUpgradeReports
Rev B 20YM 1 DDR4 SO-DIMM slot + soldered 40 GB 1
Rev B 82KU 1 DDR4 SO-DIMM slot + soldered 12 GB 1
Rev B 82LN Soldered, no slot 1