Can I connect USB-C Alt Mode DisplayPort to Serial (DB-9)?

USB-C Alt Mode DisplayPort and Serial (DB-9) are not directly compatible.

Do I need an adapter for USB-C Alt Mode DisplayPort to Serial (DB-9)?

No, USB-C Alt Mode DisplayPort and Serial (DB-9) can be connected directly without an adapter.

Will connecting USB-C Alt Mode DisplayPort to Serial (DB-9) cause signal loss?

No significant signal degradation is expected when connecting USB-C Alt Mode DisplayPort to Serial (DB-9).

USB-C Alt Mode DisplayPort ↔ Serial (DB-9)

Compatibility check and signal path analysis

Adapter Required

These connectors are not directly compatible. An adapter or converter cable is needed.

Signal Path

USB-C Alt Mode DisplayPort DisplayPort

Serial (DB-9) Unknown

USB-C Alt Mode DisplayPort

Family DisplayPort

Form Factor Oval symmetric (USB-C)

Pin Count 24

Reversible Yes

Serial (DB-9)

Family Legacy Data

Form Factor D-sub 9-pin

Pin Count 9

Reversible No

Notes

USB-C Alt Mode DisplayPort to Serial (DB-9): DisplayPort carries video; legacy data connectors carry serial/parallel data. The USB-C Alt Mode DisplayPort (DisplayPort) and Serial (DB-9) (Legacy Data) are from different connector families.