PCRB41 (A) (EPSON)

PC-486HA / HX / HG dedicated internal memory expansion baseboard.Third party
There is no equivalent.There are six SIMM sockets, and the expandable SIMMs are Epson specification
The 2MB, 4MB, and 8MB ones (1MB is not possible), can be expanded in units of one.

There are 3 jumper switches (J1) on the back of the board.
25 at left and center short at board erect, 33 at center and right short
Because there is silk printing, it will be the setting with HG and HA / HX in order.