You pay for the transport
DB9 Female to 3.5mm Serial Cable
Audio Stereo DC3.5 mm Jack to DB9 Female Serial Port. Fully shielded to prevent unwanted EMI/RFI interference.
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.
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/1.8M Stereo 3.5mm to DB9 Velocity Audio/Video Cable
Tunachagua tunavyovipenda na tunakutumia bidhaa moto moto kila wiki!!