01When MCIO is usually the starting point
Use the MCIO route when the host board, controller, adapter or backplane specifies an MCIO mating interface. Confirm size, keying, orientation and lane count before quoting.
CABLE ASSEMBLY RFQ · DRAWING AND SAMPLE CHECK
EndpointsApplication
Drawing / sample
MCIO vs SlimSAS Cable: Which One Should You Request?
MCIO and SlimSAS often appear in the same server or storage project, but the right RFQ starts from the board, backplane, drive or adapter relationship—not from the connector name alone.
EndpointsApplicationDrawing / sample
REAL RFQ INPUTSConnector, route, length and quantity are checked before quoting
BUYER SELECTION GUIDE
Use the equipment path before choosing MCIO or SlimSAS
MCIO and SlimSAS often appear in the same server or storage project, but the right RFQ starts from the board, backplane, drive or adapter relationship—not from the connector name alone.
MCIO and SlimSAS are both used in compact high-speed internal cable assemblies, but they are not alternative names for the same purchasing item. The correct request depends on which connector is designed into the board, controller, adapter, backplane or drive path. A useful RFQ should therefore begin with equipment roles and evidence, then move to connector family, cable exit, length and quantity.
Application firstEvidence controlledCompatibility reviewRFQ ready
SELECTION TABLE
Compare the buying inputs before choosing a cable
Use this table to prepare the first RFQ message. If an item is unknown, leave it as a review question instead of guessing.
Best starting evidenceBoard drawing, controller model or backplane specification showing an MCIO mating interface.Platform note, drawing or connector callout showing SlimSAS SFF-8654 4i or 8i.
Typical RFQ questionWhich MCIO size, keying, orientation, lane requirement and opposite endpoint are required?Is it 4i or 8i, straight-through or breakout, and what is the opposite endpoint?
Common project riskChoosing a visually similar assembly with the wrong orientation, lane map or target endpoint.Assuming all SFF-8654 cables are interchangeable across SATA, U.2 and board-to-board paths.
Useful next pageMCIO family or MCIO to SlimSAS product page.SlimSAS family, SFF-8654 8i to U.2 or SFF-8654 4i to SATA page.
BUYER CHECKPOINTS
Information to collect before quotation
Unknown items can remain open. The goal is to make them visible instead of hiding them inside an assumed product match.
0102When SlimSAS is usually the starting point
Use the SlimSAS route when the platform or drawing calls out SFF-8654 4i or 8i. Confirm whether the opposite end is straight, angled, breakout, U.2 or SATA.
03Most common buying mistake
Do not choose from a product photo. MCIO and SlimSAS assemblies can look similar in a small image, but pinout, direction, lane topology and cable exit may be different.
04What to send for RFQ
Send host model, target model, connector photos, target length, quantity, project stage and any drawing or old cable label. If a field is unknown, mark it unknown instead of guessing.
05What we check before quote
We check both endpoints, direction, cable exit, construction, document availability and whether the request matches a buildable cable route.
06Where to go next
If the host side is MCIO, start from MCIO products. If the board calls out SFF-8654, start from SlimSAS. If neither side is confirmed, use Custom Cable.
COMMON BUYING RISKS
What usually causes the wrong cable to be quoted?
These are the mistakes to remove before price, lead time or sample approval becomes meaningful.
Starting from a photo only
Small product photos rarely show keying, latch side, cable exit or wiring definition clearly enough for a buildable quote.
Mixing host and target roles
A cable that looks right can still be wrong if the host-to-target relationship and lane topology do not match the platform.
Assuming performance from the connector name
Generation, data rate and compliance should be quoted only after the exact assembly and evidence are reviewed.
NEXT STEP
Continue from the closest technical route
If both connector families appear in your research, do not force the decision at the first email. Send the equipment path and available references; the RFQ can be routed to MCIO, SlimSAS or a custom review after the real endpoints are clear.
Send Your Requirement →FROM ROUGH INFORMATION TO A QUOTABLE CABLE
Send the drawing, photo, sample label or equipment model. We will check the missing details before quoting.
01Endpoints02Check
03Build route
04Quote