Memory Plus Expansion Board (250-1062) Settings Faxback Doc. # 2012 Note: Refer to Faxback Doc. # 2015 for Board Layout. Note: This board is for the 1000 EX/HX only. This Board expands the 1000EX/HX from 256K to 384K. Additional 256K RAM chips, expand the 1000EX/HX to 640K. E1 - E2 Jumpered selects 128K (384K system memory). E2 - E3 Jumpered selects 384K (640K system memory). Use memory kit 250-1079, this kit includes eight 256K X 1 DRAMS at 150 nanoseconds. (CSS/jlc-03/28/94)