This is a Scientific Atlanta model D-9593 Sega Channel modem/adapter.

The Sega Channel is long defunct, so this unit is untested and being offered for sale as-is, for its value as a collectible piece of video game history.

Please see our photos for more details, and note we wiped the spots on the label off when we noticed them after photographing. Feel free to ask any questions you may have before making your purchase.