MODEM

Connector for computer to telephone line (5)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,077 — 2021-11-16 00:00:16
  9A: Computer/phone connector (5)
• Quick crossword No 15,640 — 2020-06-22 23:00:30
  5D: Connector for computer to telephone line (5)