NGA II Network Game Adapter.
TMA 1200 BSC
1200bps modem to connect exclusively to the Japanese "The Links" network.
Manufactured by Murata Seisakusho according to the nameplate, distributed by Nippon Telenet
Also came bundled with the following game:
- C-Drive
The Links network closed on Sep 1994 according to MSX FAN 1994-10 page 66 and 80.