Add to Cart Quick view IBM 3865-2 1980s Vintage Data Modem for Mainframe Terminal System IBM Was: $203.00 Was: $750.00 IBM 3865-2 1980s Vintage Data Modem for Mainframe Terminal System. The Data Cable as been clipped Clipped Data Cable 2 Banks of 8 Dip Switches Condition: UsedThis Vintage Modem still powers... 13194 SKU: 13194 Weight: 37.00 LBS