Okuma E4809-045-201 Opus 7000 Memory Board-B with Battery

Okuma 1911-2301 OSP7000 3.5" FDD Floppy Disc Drive Emulator

Opus 5000 Bubble Memory Card 4Mbitx2 E0227-702-008

Okuma E4809-436-095-A Opus7000 DRAM Card 16MB

Okuma E4809-770-078-A Opus7000 CMOS SRAM Card Module

OKUMA OPUS 5000, OKUMA TCC-A E4809-045-112-C, OKUMA E4809-045-112-C BOARD

Okuma Opus 5000 Bubble Memory Card 4M bit x 2 E0227-702-008 LBI0 Lathe

Okuma A911-2803 Opus7000 DRAM Card 8MB Circuit Board