LIANSHU

DB9Pin M to DC3.5mm Serial RS232 Cable 6feet DB9Pin to 3.5mm Serial Cable L= 6FT Black

Name: DB9Pin M to DC3.5mm Serial RS232 Cable 6feet DB9Pin to 3.5mm Serial Cable L= 6FT Black
Brand: LIANSHU
SKU: B07G2ZL3SL

Bottom line: The DB9Pin M to DC3.5mm Serial RS232 Cable 6feet DB9Pin to 3.5mm Serial: Reuses existing 3.5mm stereo runs instead of pulling new RS-232 cable; main trade-off: listing text contradicts itself, naming 2.5mm in some lines and 3.5mm in others.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Reuses existing 3.5mm stereo runs instead of pulling new RS-232 cable
✓ Full shielding on the run guards the signal against EMI/RFI pickup
✓ Molded DB9 and 3.5mm shells give both ends strain relief
✓ Published pinout: pin 2 tip, pin 3 ring, pin 5 shield, pins 1/4/6-9 open

Cons

✗ Listing text contradicts itself, naming 2.5mm in some lines and 3.5mm in others
✗ Only 3 conductors, so there is no hardware flow control (RTS/CTS)
✗ Sold in a single 6ft length with no shorter or longer option listed
✗ Seller asks you to verify the pinout diagram, so it may not match your device

Manufacturer description

Color:DB9 Male To DC 3.5mm Cable6feet DB9 Male To 3.5mm Serial CableDB9Pin Serial Transfer Cable For DevicesStereo 3.5 mm Jack To DB9 Pin Male Serial Port.Primarily used to transfer Serial Data back and forth from Small devices.Wiring Schematic:DB9 TRS Connector / Audio DC3.5mmPin 1-6-7-8 openPin 2 Tip - LeftPin 3 Ring - RightPin 4 openPin 5 Shield - GroundPin 9 openConnector 1:DB9Pin Male ;Connector 2: DC3.5mm MaleAdapt Your 3.5mm stereo Jack For RS-232 Serial ControlThis Adapter Is Ideal For Use With Computers, Projectors, And Any Control Unit&Display Requiring 3-Conductor RS-232 Serial…

SpecPicks Verdict

SpecPicks scored DB9Pin M to DC3.5mm Serial RS232 Cable 6feet DB9Pin to 3.5mm Serial… using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. LIANSHU's cables & connectors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cables & connectors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

LIANSHU Serial Transfer Cable For Devices, Primarily Used To Transfer Serial Data Back And Forth From Small Devices. The Velocity RS-232 Adapter Leverages Your DB9 or 2.5mm Stereo Audio Cable To Run 3-Conductor RS-232 Control Signals Between Your Control Unit And Your video display
Audio Stereo DC2.5 mm Jack to DB9 Female Serial Port. Fully Shielded to Prevent Unwanted EMI/RFI Interference.Fully Molded DB9 and 2.5mm Connectors Provide Excellent Strain Relief.
Why Run All New Cables For RS-232 Control Of Your Audio/Video System, When You Can Use This Easy Adapter.
The Velocity RS-232 Adapter Leverages Your DB9 Or 3.5mm Stereo Audio Cable To Run 3-conductor RS-232 Control Signals Between Your Control Unit And Your Video Display.Fully Molded DB9 And 3.5mm Connectors Provide Excellent Strain Relief.
This Adapter Is Ideal For Use With Computers, Projectors, And Any Control Unit&Display Requiring 3-Conductor RS-232 Serial Control.
Our Recommendation : Please Kindly Confirm The Last Picture, Especially The Pinout Wiring Diagram.

Full Specifications

Brand	LIANSHU
Color	Black
Model	8541684861
Cable Type	Audio cable
Item Shape	Round
Unit Count	1.0 Count
Connector 1	DB9Pin Male ;Connector 2: DC3.5mm Male
Part Number	7545826580
Connector Type	Auxiliary
Number of Pins	9
Maximum Voltage	5 Volts (DC)
Number of Items	1
Special Feature	Tangle Free
Connector Gender	Male-to-Male
Compatible Devices	Projector
Our Recommendation	Please Kindly Confirm The Last Picture, Especially The Pinout Wiring Diagram.
Indoor Outdoor Usage	Indoor, Outdoor
Compatible Phone Models	No Compatible Phone Models
Recommended Uses For Product	Connecting and transmitting serial data between devices such as computers, projectors, and control units
Other Special Features of the Product	Tangle Free

Ready to buy?

DB9Pin M to DC3.5mm Serial RS232 Cable 6feet DB9Pin to 3.5mm Serial Cable L= 6FT Black is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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