SATA Fan Adapter
Power one to five compatible cooling fans from a SATA PSU lead with a compact, black-sleeved harness. BC-DAG028 offers five branch-count options for enclosure builders who need a defined fan-power route without adding another circuit board.
- SATA 15-pin male power input.
- One, two, three, four, or five fan-side branches.
- Black braided sleeving for an organized cable route.
- Power-only layouts shown; no independent PWM control lead.
- Fan voltage, connector fit, and total startup load require review.
- Custom branch lengths and identification available for OEM projects.
Match the Fan Layout and Control Requirement
SATA Fan Adapter for One to Five Cooling Fans
BespokeCable BC-DAG028 routes power from a SATA PSU lead to fan-side connectors in a single compact harness. Choose the branch count that matches the enclosure, then specify the fan models and cable route. The range is useful for chassis and equipment builds that need a simple, organized power connection rather than a full fan-control hub.
There is an important distinction: supplying power to a four-pin fan is not the same as controlling it by PWM. The pictured assemblies show a SATA input and fan outputs, with no separate motherboard signal connection. They should be specified as power-only harnesses, not as automatic speed controllers or RPM-monitoring hubs.
Choose the Branch Count
| Model | Fan-side connections |
|---|---|
| BC-DAG028-1 | One branch for a single fan connection |
| BC-DAG028-2 | Two branches for a paired fan arrangement |
| BC-DAG028-3 | Three branches for a three-position layout |
| BC-DAG028-4 | Four branches for four fan positions |
| BC-DAG028-5 | Five branches for a five-position layout |
Output count describes the physical layout, not the allowable load. Add the fan currents and review startup demand against the approved harness and upstream PSU lead. More connectors do not create more source capacity.
Configuration Details to Confirm
| Item | BC-DAG028 selection guidance |
|---|---|
| Power input | SATA 15-pin male plug, mating with the appropriate PSU cable socket |
| Fan connection | Fan-style housings; confirm keying, populated contacts, and the actual fan plug |
| Intended fan supply | Review for compatible 12 V fan applications; confirm the quoted pin map before use |
| Control function | Power distribution only for the pictured layouts; no PWM signal or RPM return path claimed |
| Construction | Black sleeving shown; wire gauge, terminals, and materials confirmed for the order |
| Load rating | Specify continuous and startup current; no blanket per-port or total current guarantee |
| Dimensions | Confirm overall length, individual branch lengths and split location |
| OEM options | Branch routing, labels, connector configuration and packaging subject to review |
When a Power-Only Harness Is the Right Choice
Use this type of assembly when the equipment design calls for a fixed fan supply and does not depend on motherboard speed commands or fan-failure feedback through the harness. It can simplify wiring between a PSU peripheral lead and several fan locations while keeping the selected branch count easy to identify.
If you need BIOS fan curves, temperature-responsive speed control, or RPM monitoring, specify a controller or hub with the required signal connections. Don’t assume a four-position housing provides those functions. Lighting is separate too: RGB and ARGB interfaces are not fan-motor power connectors.
Plan the Supply Before Adding Fans
The SATA source, shared trunk, and individual branches must support the intended fan combination, including startup. Avoid extending the load through successive splitters. If your project needs additional SATA drive-power outlets instead of fan connections, compare the SATA power splitter range; if reach is the issue, review the SATA power extension options.
Send the fan part numbers, supply voltage, current requirements, connector photos, and installation dimensions with your quantity. We can review the branch layout and quote a configuration that fits the actual cooling assembly.
Choose One to Five Fan Connections
Match the branch count to your cooling layout. All five photographed versions are power-distribution harnesses; confirm the fan voltage, populated contacts, and combined load for the selected build.
P/N: BC-DAG028-1
One fan connection keeps the route simple when an enclosure needs a single fixed-supply cooling point. Match the fan voltage and connector pinout, then specify the required reach. The pictured harness supplies power only; it does not add motherboard speed control or RPM monitoring.
P/N: BC-DAG028-2
Choose two branches for a paired cooling arrangement without extra unused outputs. Send both fan models and the distance to each mounting position so the shared source load and branch lengths can be reviewed. This power-only layout does not independently control either fan.
P/N: BC-DAG028-3
Three fan-side branches support a defined three-position enclosure layout. Specify each route rather than relying on one overall cable length, and include the combined startup demand. The adapter handles the power connection; any PWM command or speed-feedback function needs its own suitable design.
P/N: BC-DAG028-4
Four sleeved branches provide a starting layout for four fan locations. Review the shared SATA source path and each fan load before ordering, especially when using different fan models. Request the branch spacing and labels needed for installation and subsequent service access.
P/N: BC-DAG028-5
The product photograph identifies the five-output layout as BC-DAG028-5. Use it when five fan positions are required and the complete load has been reviewed. Connector count is not a power rating, and the pictured harness does not include a PWM controller.
Fan Power Is Not PWM Control
A SATA power lead provides power rails; it doesn’t send a motherboard PWM command or receive a fan-speed signal. The photographed BC-DAG028 harnesses show power branches without a separate control cable.
For a four-wire fan, PWM is a control signal distinct from its supply voltage. Many compatible fans run at full speed when no PWM command is connected, but the fan specification determines the exact behavior. A power-only adapter should not be sold as a variable-speed hub.
Tell us whether the cooling design needs fixed-speed operation, motherboard control, or RPM feedback. That requirement determines whether the pictured harness is appropriate or whether you need different wiring and a different controller arrangement.
The five layouts provide fan-side connections 1 through 5. Choose the count needed for the enclosure, then confirm the total fan demand against the approved harness and PSU lead. Port count alone does not establish the electrical load limit.
Not in the pictured power-only layouts. No separate motherboard control connection is shown. A four-position fan housing does not itself generate a PWM signal. If speed control is required, specify an appropriate controller or a separately reviewed signal-wiring arrangement.
A universal current limit is not stated here. Provide each fan’s operating and startup requirements so the shared input, trunk, branches, and contacts can be reviewed for the quoted build. Do not multiply a presumed per-port rating by the number of connectors.
Check its voltage, keying, and power-pin assignment against the selected harness. A compatible fan can receive power without a PWM or tachometer path, but control and monitoring functions will not appear simply because the connector fits. Confirm behavior with the fan manufacturer.
Only after checking their voltage, pinout, and combined load. Different sizes or brands can have different startup demands and no-signal behavior. A common power harness doesn’t regulate each branch independently or run all fans at the same speed.
Yes, we can review individual branch dimensions and the split location for the enclosure. Send a routing sketch with connector orientation and service-clearance needs. Wire construction and acceptable voltage drop should be considered for the requested length.
Do not assume this is acceptable. Chaining increases the load and number of connections on the shared upstream path. Request a suitable complete harness or powered control arrangement for the required fan count instead of treating extra splitters as added capacity.
They are confirmed against the selected model, customization, and quantity. Include the fan list and routing requirements in your inquiry so the quotation can cover the actual build. This page does not promise one fixed MOQ or lead time for every configuration.
Ask for an evaluation quotation with the required layout and fan specifications. Confirm sample availability, price, freight, and lead time for that configuration. Agree on the wiring and operational checks needed for approval before moving to a larger order.
No RPM return connection is shown in these power-only harnesses. A motherboard cannot read a fan’s tachometer output without the appropriate signal path. For monitored cooling, specify the required feedback connection and controller rather than relying on the SATA supply.
Not as a fan-motor adapter alone. RGB and ARGB connections use different pin assignments and may use different voltages. Keep lighting and fan-power connections separate, and follow the fan or lighting-controller documentation for the exact model.
Related Products
Plan Fan Power and Fan Control as Separate Requirements
An extra cooling fan can seem like a simple addition until you consider its power routing, startup load, and control behavior together. A SATA fan adapter is useful when the requirement is power distribution. It is not automatically a substitute for a controller, a motherboard header, or a monitored cooling system.
Decide how the fans should behave
For a fixed-supply design, the fan receives its specified operating voltage without a speed command from this harness. A typical four-wire PWM fan has separate supply, ground, speed-feedback, and control connections. The four-position housing alone does not tell you which of those paths are populated.
If the equipment needs a temperature-based fan curve, confirm the controller and its PWM connection. If the system must detect a stopped fan, confirm the tachometer path and how the controller interprets it. Do not connect multiple tachometer outputs together unless the control design expressly supports that arrangement.
Check the fan labels before choosing a splitter
Record each fan model, rated voltage and current, and obtain startup information where the cooling design requires it. Similar-looking fan plugs can belong to different voltage versions. A fixed supply suitable for one fan is not necessarily suitable for another; a passive adapter does not regulate the voltage to suit whatever is connected.
Add the loads across all branches and consider the shared supply path. The number of connectors is not a current rating. For a mixed fan set, record each branch separately rather than assuming identical demand. Pumps and proprietary fan modules should be reviewed as separate loads, not automatically treated as ordinary case fans.
Design the routing around the enclosure
Choose one through five outputs to match the actual fan locations. Measure the path from the PSU peripheral lead to the split point and from that point to each fan. Unequal branch lengths can be useful when fan positions are spread across the enclosure.
Keep the loom away from blades, sharp edges, and hot surfaces. Leave enough slack for assembly and service without letting loose cable enter a rotor. Black sleeving helps organize the route, but appearance alone does not establish an abrasion, flame, or temperature rating.
Connect to the intended supply
The SATA male plug mates with an appropriate SATA power socket on the approved PSU lead. It does not plug into a drive to obtain power, and it is not a direct modular-PSU connector. Use the PSU manufacturer’s correct peripheral cable, and verify harness polarity before first use.
Make connections with power off. Do not attach RGB or ARGB lighting plugs to fan-power outputs. Adding an adapter behind another splitter creates a longer shared path; request a suitable branch layout rather than assuming successive adapters increase capacity.
Evaluate the complete cooling arrangement
A sample review should check the wiring and mechanical fit, then the specified fan operation and total load in the real enclosure. Where applicable, assess startup, connector temperature and the airflow outcome. Seeing every fan rotate does not prove the equipment meets its thermal requirements or detect a fan failure.
For an OEM quotation, provide the fan list, source details, branch dimensions, quantity, and the checks needed for approval. Send your fan-power layout so the harness specification can address both assembly convenience and the operating requirement.
