This rotary unit will switch between 4 DB9 serial devices. This box is plug and play and is easy to use, the rotary switch is located on the front of the unit.
Db9 Female Connectors
Rotary Front Panel Switch
All pins switch operation
2 way, 4 way and cross over
Specification
Warranty: Lifetime
Color: Beige
Connection: DB9 Female Plug
Connection: 4 DB9 Serial Ports
Converts: Converts back and forth between DB9 Female Plug and 4 DB9 Serial Ports