None, Xon/Xoff, RTS/CTS (RS-232 only)

1-Port Serial Device Server, industrial EMC potection, RS-232/422/485, DB9(M)

1-Port Industrial Serial Device Server, RS-232/422/485, Terminal Block

1-Port Industrial Serial Device Server, RS-232/422/485, DB9(M)

2-Port Serial Device Server, Industrial EMC, RS-232/422/485, Terminal block

2-Port Serial Device Server, Industrial EMC, RS-232/422/485, 2kV Isolation, Terminal block

2-Port Serial Device Server, Industrial EMC, RS-232/422/485, Terminal block, SFP