The 2770 can attach the 2213 Printer, the 2502 Card Reader, the 545 Card Punch, the 2265 Display Station, the 1017 Paper Tape Reader, the 1018 Paper Tape Punch, the 50 Magnetic Data Inscriber, and the 1255 Magnetic Character Reader. The printer and devices for any two other media can be attached to one 2772 Control Unit. The 2770 was developed by the IBM General Products Division (GPD) in Rochester, MN. An SNA successor, the 3770, a Data Processing Division (DPD) product, appeared in 1974.