USB Type-B ↔ Serial (DB-9)
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Compatibility check and signal path analysis
Adapter Required
These connectors are not directly compatible. An adapter or converter cable is needed.
Recommended: USB Type-B to Serial (DB-9) adapter
Signal Path
USB Type-B
Family
USB
Form Factor
Square trapezoidal
Pin Count
4
Reversible
No
Serial (DB-9)
Family
Legacy Data
Form Factor
D-sub 9-pin
Pin Count
9
Reversible
No
Notes
USB Type-B to Serial (DB-9): USB to serial/parallel adapters are available. Essential for legacy industrial and scientific equipment. Driver required. The USB Type-B (USB) and Serial (DB-9) (Legacy Data) are from different connector families.