Sega's rare Mega Terminal spotted on twitter

セガの珍品「MEGA ターミナル」入荷してます。ごく一部のメガドライブソフト対応のモデムです。 大変珍しいので、この機会にぜひ！（ケン）#akiba#メガドライブ pic.twitter.com/0iHGT57w8e

— アキハバラ＠BEEP (@BEEP_akihabara) May 29, 2021

"The Mega Terminal (MEGA ターミナル) is a Japan-only accessory for the Sega Mega Drive. It is exceptionally rare and has not been widely documented. Like the Sega Mega Modem, the device connects to the back of a Mega Drive through the third DE-9 expansion port; consequently, it will only connect to a Model 1 Mega Drive. The device can link up to an ISDN telephone line and transmit (or receive) data at a rate of 1200-2400bps. As ISDN lines only charged by the number of packets transmitted rather than the length of time connected it could often work out cheaper to use ISDN than a standard line. This was especially true in a game such as Go, which took a long time between moves, whilst transmitting little data. ISDN lines also allowed a telephone to still work whilst using the line for data, whereas a standard line would be tied up by the use of the Sega Mega Modem. List of Compatible Software Go Net (1992) Sansan (1994)" (Segaretro.org)