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DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch Conversion Cable Cord- 6FT/1.8M
Qaoquda

DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch Conversion Cable Cord- 6FT/1.8M

Bottom line: The DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch: Fully shielded DB9-to-3.5mm run cuts EMI/RFI on long control drops; main trade-off: 3-conductor only, so no hardware flow control (RTS/CTS, DTR/DSR) pins.

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By , Founder & Editor-in-Chief · Listing data updated

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.

Pros & Cons

Pros

  • ✓ Fully shielded DB9-to-3.5mm run cuts EMI/RFI on long control drops
  • ✓ 6 ft (1.8 m) length reaches wall-mounted projectors without an extension
  • ✓ Molded connectors on both ends give real strain relief at the port
  • ✓ Carries 3-conductor RS-232 control between control unit and display

Cons

  • ✗ 3-conductor only, so no hardware flow control (RTS/CTS, DTR/DSR) pins
  • ✗ DB9 end is female, so male-port devices need a gender changer
  • ✗ Not an audio cable despite the 3.5mm plug, easy to buy by mistake
  • ✗ Baud rate and pinout compatibility depend on your specific display

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SpecPicks Verdict

SpecPicks scored DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch… using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. Qaoquda'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

  • Connector1: Stereo 3.5 mm Jack, Connector 2: DB9 Female Serial Port.
  • Fully shielded to prevent unwanted EMI/RFI interference.
  • Generic Serial Transfer Cable For Devices,Primarily used to transfer Serial Data back and forth from Small devices.
  • The 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.
  • Pacage:1* 6 feet Qaoquda 3.5mm to DB9 Serial Cable

Full Specifications

BrandQaoquda
Model並行輸入品
Pacage1* 6 feet Qaoquda 3.5mm to DB9 Serial Cable
Cable TypeAUX
Connector1Stereo 3.5 mm Jack, Connector 2: DB9 Female Serial Port.
Item ShapeRound
Unit Count1.0 Count
Item Length6 Feet
Part Number43211-1608
Connector TypeAuxiliary
Number of Pins9
Number of Items1
Special Featureanti-interference
Connector GenderMale-to-Female
Compatible DevicesProjector
Data Transfer Rate6 Gigabits Per Second
Indoor Outdoor UsageIndoor, Outdoor
Compatible Phone ModelsNo Compatible Phone Models
Connectivity TechnologySerial Port
Recommended Uses For ProductIndoor use

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DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch Conversion Cable Cord- 6FT/1.8M is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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DB9 9 Pin Female to 3.5mm Male Plug Serial Cable RS232 to 1/8 inch Conversion Cable Cord- 6FT/1.8M
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