will this convert my 15 pin male plug from my monitor to a USB on my laptop?

Not likely. This is for serial connections such as those used on switches for maintenance. It sounds like what you're looking for is an external video card with an HD15(blue monitor plug) connection.

Is software required to use this converter.? Will it work with windows 7

The one I have is not the 9-pin version shown. I have the din connector version. I use it to connect a din connector keyboard to various computers that only have USB connectors, like Raspberry Pis. It does not require software. I have not used W7 for a long time so I cannot say about that, but I expect it would.

I need a female 9-pin serial converter that will interface with a 9-pin male teltone device. Do they make those?

yes, those are available..search for "gender changer"

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Main image of TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 2 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 3 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 4 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 5 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 6 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 7 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 8 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 9 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Alt view image 10 of 10 - TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

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TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

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USB: The USB to serial adapter supports USB 1.1 and it is compatible with USB 2.0 and USB 3.0 ports.
RS-232 SERIAL CONNECTOR: Connect RS-232 serial devices, such as modems or printers, using the widely supported USB standard found in most laptops and desktops today.
SUPPORTED OPERATING SYSTEMS: The USB to serial converter adapter is compatible with Windows and Mac operating systems. Windows 10, 8.1, 8, 7. Mac OS 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
FLEXIBLE CABLE: Integrated and flexible 540mm (21 in.) USB 2.0 cable accommodates most installation scenarios. Total cable length of 25 inches when including the RS-232 (9pin) and USB Type A.
EASY SETUP: Simple installation in seconds of the USB to Serial 9-Pin Converter Cable. Insert the your computer

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This USB to Serial converter allows you to connect an RS-232 serial device such as a modem to a USB port on your desktop or laptop.

Model
Brand	TRENDnet
Model	TU-S9
Type	Data Transfer Cable
Type	Cable Connectors
Color	Black

Details
Length	21 -- 25 Inches
Connector Number	2
Connector Detail	Connector A: 1 x USB 1.1 Type A Male Connector B: 1 X RS-232 (9-pin) Male
Terminal Gender	Male to Male
Specifications	Cable Gauge: 28/24 AWG Data Rates: 500 kbps Power Consumption: 500mA (max) Weight: 0.2 lbs. Operating Temperature: 0 degrees - 40 degrees C (32 degrees - 104 degrees F) Storage Temperature: -10 degrees - 45 degrees C (14 degrees - 113 degrees F) Humidity: 85% (Non-Condensing) Certification: FCC, CE

Features
Features	Supports RS-232 serial interface Detects USB suspend condition Install as a standard Windows COM port, Full RS-232 modem control signals, RS-232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND Supports BUS Power, no external power adapter required Supports plug & play and easy Installation Compliant with Windows 98SE / ME / 2000 / 2003 / XP

Additional Information
First Listed on Newegg	February 09, 2025

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TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

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TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length, Plug & Play

Learn more about the TRENDnet TU-S9

Customer Reviews of the TRENDnet TU-S9

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Warranty, Returns, And Additional Information

Warranty

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Manufacturer Contact Info