Dynabook laptops

2 models from 7 hardware reports. 1 of them have a memory slot you can fill.

TECRA1
Satellite1

Most reported models 2

ModelSeriesMemoryMost seenUpgradeReports
TECRA A50-J TECRA Varies by configuration 4
Satellite Pro C50-J Satellite 2 DDR4 SO-DIMM slots 32 GB 3