DB9 Ribbon Cable
- DB9 to IDC 10-pin and DB9 to DB9 options
- Male and female connector combinations
- Gray or rainbow ribbon construction
- Flat routing inside equipment enclosures
- Custom length and equipment-specific wiring
- Replacement inquiries from samples or board information
DB9 Ribbon Cable —Internal DB9 Connections Built Around Your Board
BespokeCable supplies DB9 ribbon cables for internal connections where a flat cable route is easier to accommodate than a round lead. Choose a 10-position IDC board connection or a second DB9 connector, with male and female configurations in gray or rainbow ribbon.
We can adapt the assembly to your wiring and enclosure. If you are replacing an old cable, send the board model or a reference sample with photographs of both ends. You do not need to identify every header detail before starting the inquiry.
Specification Table
| Item | Specification |
| Assembly family | BC-CAI010 |
| D-sub interface | 9-position, two-row D-sub; commonly called DB9 |
| Second end | IDC 10-position socket or 9-position D-sub, depending on model |
| Gender choices | Male or female D-sub contacts, as listed for each configuration |
| Ribbon appearance | Gray or rainbow |
| Header pitch | Confirm the selected socket and board header; 2.54mm and 2.00mm are not interchangeable |
| Cable construction | Conductor gauge, spacing, insulation, and termination suitability by approved BOM |
| Length | Custom dimension with stated measurement endpoints |
| Wiring | Equipment-specific map; straight-through or crossed wiring only as specified |
| Unused positions | Defined individually; no assumed use for IDC position 10 |
| Mounting hardware | Shell, screw thread, and any bracket requirements by drawing |
| Electrical function | Passive interconnection; no signal-level or protocol conversion |
Product Configurations
P/N: BC-CAI010-MG
Connect an internal 10-position header to a male DB9 interface with a compact gray ribbon. Confirm the header pitch and numbered map before selection; the connector combination alone does not identify a motherboard standard.
P/N: BC-CAI010-FG
Use the female DB9 version where the mating connector has male contacts. Keep the board-side keying and cable exit on the drawing so you can install the assembly without twisting the ribbon at the termination.
P/N: BC-CAI010-MR
A male DB9-to-IDC configuration with colored conductors for visual identification during assembly. Define the color sequence against contact numbers; the sequence is an aid to inspection, not a substitute for electrical verification.
P/N: BC-CAI010-FR
This female DB9 version combines a 10-position IDC end with a rainbow ribbon. Specify unused header positions explicitly, particularly when the board uses a blocked position or provides functions beyond the nine D-sub contacts.
P/N: BC-CAI010-MMG
Choose two male DB9 ends for equipment with matching female interfaces. State whether the map is straight-through or custom; male-to-male construction does not by itself define a null-modem cable.
P/N: BC-CAI010-MFG
A mixed-gender gray ribbon assembly for short internal D-sub connections. Show the orientation of both housings and the available routing so the cable does not need an unplanned fold next to the connector.
P/N: BC-CAI010-FFG
Two female DB9 terminations connect to corresponding male interfaces inside your equipment. Include required shell and screw hardware details when the connection must pass through a panel or mate with retained connectors.
P/N: BC-CAI010-MMR
Rainbow conductors support visual tracing between two male DB9 ends. Use a numbered connection schedule for production, especially when the equipment requires a crossover or a nonstandard control-signal assignment.
P/N: BC-CAI010-MFR
This rainbow mixed-gender cable can help distinguish an internal connection from nearby gray assemblies. Confirm the installed length and identifier separately; a color change does not imply a different electrical map.
P/N: BC-CAI010-FFR
A female-to-female option for matched male D-sub interfaces, with a colored flat cable. Review access to both connectors and specify endpoint labels when the two ends need to remain distinguishable during servicing.
From a Board Header to a DB9 Interface
The IDC-to-DB9 configurations bring a specified internal header connection to a nine-position D-sub endpoint. They are useful when the board and equipment interface need a flat, organized route inside the enclosure.
The 10-position header has one more position than the DB9. Its assignment comes from the equipment map; it may be unused or have another defined role. The cable should record that detail rather than assume the extra position is ground.
DB9 Connections at Both Ends
For equipment with D-sub interfaces at both endpoints, the range includes male-to-male, male-to-female, and female-to-female configurations. Gender selects the mating contact arrangement, while the pin map defines the electrical connection.
A male-to-female assembly is not automatically straight-through, and matching genders do not automatically mean a null-modem cable. We can discuss the map needed for the actual ports.
A Ribbon That Fits the Internal Route
Gray ribbon offers a consistent appearance; rainbow ribbon makes conductor order easier to follow during assembly or fault-finding. Either can be sized around the intended route, with the exit direction shown at both ends.
For an exposed connection requiring a jacket or shielding, our DB9 cable range is a better comparison. An internal ribbon should not be assumed to offer the same protection as an external lead.
We can review one from a numbered connection schedule. Describe the actual map rather than request an unspecified crossover, since several different arrangements use that name.
Yes. Provide the mating hardware or panel drawing, including the thread requirements. Screw hardware that looks similar can still differ, so this should be part of the assembly specification.
Yes, as separately identified assemblies. Use a distinct part number or revision for each map, and keep the quantities separate on the order.
No. If a shell bond or shield connection is required, show it explicitly with the expected connection and test requirements.
Yes. End labels can help when the installed orientation is not obvious. Give us the wording and the area that remains visible after the cable is fitted.
It can still help identify the connector and route, but a broken conductor may conceal the intended wiring. Include the board manual or another working example if available.
Related Products
Finding the Right DB9 Cable for an Undocumented Header
A missing cable does not always come with a complete drawing. The board model, port function, and connector photographs can still provide a useful starting point for a replacement inquiry. The key is to separate what is visible from what the electrical connection must do.
Identify the Board Port Before Naming the Cable
A DB9-shaped interface can carry RS-232, another electrical interface, or proprietary signals. Likewise, two ten-position board headers may assign the same signals to different contact numbers. The board manual or a checked wiring record is more reliable than connector shape.
A passive ribbon cable carries the specified connections; it does not translate voltage levels or add a serial controller. If the source is USB, the USB-to-DB9 range addresses a different, active-interface requirement.
Recover the Map From Reliable Evidence
An existing disconnected cable can help establish the connection schedule, but you should also consider previous repairs. Record the view used for each connector, so contact numbers don’t get mirrored when moving from the mating face to the rear.
We can discuss the replacement using the information you have, then identify what must be resolved before manufacturing. This is more useful than choosing a visually similar cable and hoping the board follows the same pinout.
Check the Complete Installed Connection
Try the proposed cable with the board, mating plug, and enclosure together. Include the retaining hardware and the space behind the D-sub shell. Confirm electrical operation and physical fit before repeating the configuration in quantity.
If the port also needs a chassis mounting bracket, see the DB9 serial port bracket options. Send your board information, approximate length, and order quantity so we can quote the relevant assembly rather than a generic DB9 lead.
