DH11 - Asynch serial line multiplexer

DJ11 - Asynch serial line multiplexer

DL11 - Single asych serial line interface

DL11-W - Serial line interface

DU11 - Synchronous line interface

DUP11 - Synchronous line interface

DV11 - Synchronous preprocessor

DZ11 - 8 port async serial

DLV11 - Serial Line Unit (SLU, Async)

DZV11 - Sync serial line, with auto re-sync

DHZ11 - 16-line Asynchronous Multiplexor

DHF11 - 32-line Async MUX, Fiber optic I/O

DQ11 - NPR synch line interface

DLVJ1-M - 4-Line Asynchronous Interface (formerly DLV11-J)