Is this cable compatible with Windows 8.1 ?

I don't know, I only have Win 7 machines, but since they are just connector cables, as long as your equipment has the right ports, it should work for you.

Does it compatible with win 8 and can be used for dumping hex codes in microcontrollers.??

It is compatible with Windows 8 and 8.1. There are 8 and 8 x64 specific drivers for it. And it can be used for that purpose. I use an Ultrabook for work and I usually use the adapter for Cisco console connections but I have used it for a variety of other purposes. Although, I would suggest using an adapter like the ATEN UC232A instead. It isn't build quite as flimsily and the driver tends to crash less in Windows 8. The StarTech adapter tends to stop responding on the USB COM port after half an hour or so or the driver will crash. That usually just means you have to unplug it and plug it back in but when my YOGA 2 still had the Lenovo shipped image on it instead of the Windows 8.1 install after I wiped it it occasionally would blue screen. Hope this helps. - Josh

I have an old Graphtec plotter that I am trying to connect to a pc of approximate age compatibility (windows 7). The 40 pin parallel connecter cable to usb doesn't "appear" in the device menu of the software I am running. There are 25 pin and 9 pin ports on both. I understand the cable comes with a driver disc ? I want to try whatever is best. What do you recommend?

You might be in luck since Graphtec seems to offer Windows 7 drivers. I wasn't able to get this cable to work with my old Okidata plotter printer. Nothing was ever recognized no matter what I did, but that was because Okidata did not offer any drivers for Win 7. I don't remember that the cable came with a CD, though. The cable is well made. Wish I could be more help.

What operating systems are compatible with this USB to Serial Adapter?

It is compatible with Windows 2000, XP (32/64bit), Server 2003 (32/64bit), Vista (32/64bit), 7 (32/64bit), Server 2008 R2, MAC 10.1.x and up (32 bit), and Linux.

What is the maximum data transfer rate of the StarTech.com ICUSB232DB25 USB to Serial Adapter?

The maximum data transfer rate is 250 Kbps.

Home
Components & Storage
Cable
Serial Cables
STARTECH
Item#: N82E16812200738

WD_BLACK SN8100 NVMe SSD - 2TB, With Heatsink, M.2 2280 PCI-Express 5.0 x4 Internal Solid State Drive (SSD) WDS200T1XHM-00CMT0

(38)

$479^.99 –

$39^.99

Free 82-day Returns

Limit 999999 per customer.

Sold by Newegg

Shipped by Newegg

Price alert

Add to Wish List

Best Sellers

NothingButSavings

Hot Seller

4.5 (9,027 total ratings)

$31^.52
+ FREE SHIPPING

Volume Discounts Available

More Resources

Manufacturer Brochure

Main image of StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

Alt view image 2 of 3 - StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

Alt view image 3 of 3 - StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

Shop All STARTECH Products

StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

(20) Write a Review

Style: DB9 or DB25

DB9 or DB25
Optical Isolation
921.6 Kbps Baud Rate
Null Modem
Transparent Blue Connectors

Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable
USB to Serial
USB to RS232
USB to DB25
USB to Serial Adapter
USB to Serial Port
USB Powered
Comes with a DB9 to DB25 Serial Adapter
Intrigated 3 ft. cable

Overview

Specs

Reviews (20)

See all Q & A

Any questions? Ask Celeste^SM will help you find out quickly.

Try me now

Add an RS232 serial port to a notebook or desktop computer with this Plug-and Pl

Best Seller Ranking	#43 in Serial Cables

Model
Brand	StarTech.com
Model	ICUSB232DB25
Type	Data Transfer Cable
Type	Cable Connectors
Color	Black

Details
Length	3 ft.
Connector Number	2
Connector Detail	External Ports: 1 - DB-25 (25 pin; D-Sub) Male External Ports: 1 - DB-9 (9 pin; D-Sub) Male
Terminal Gender	Male to Male
Specifications	Interface: USB 2.0 Ports: 1 Product Weight: 2.47 oz [70 g] Serial Protocol: RS-232 Maximum Data Transfer Rate: 250 Kbps Data Bits: 4, 5, 6, 7, 8 Stop Bits: 1, 1.5, 2 FIFO: 512-byte bi-directional buffer Parity: None, Even, Odd, Mark, Space Flow Control: None, Xon/ Xoff, Hardware Bus Type: USB 2.0 Connector Type(s): 1-USB A (4 pin) Male Humidity: 0~90% RH Operating Temperature: 0ºC to 60ºC (32ºF to 140ºF) Storage Temperature: -20ºC to 80ºC (-4ºF to 176ºF) Chipset ID: Prolific-PL2303HXD Microsoft WHQL Certified: Yes OS Compatibility: Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, MAC 10.1.x and up(32 bit), and Linux Windows XP Embedded, CE 4.2/ 5.2, Windows Mobile 5/ 6, and PocketPC 2003

Standards
Sound Quality	USB powered,No external power adapters needed Supports serial transfer speeds up to 250Kbps Includes a DB9 to DB25 pin adapter for 25-pin RS232 serial communication Supports USB transfer speeds up to 12Mbps Plug-and-Play and Hot Swap Support Windows certified (WHQL) drivers Supports remote wake-up from Modem input signals and USB power management Compliant with USB Rev. 2.0 Full-Speed specification Electronics Industries Association (EIA) standard RS-232-C compliant USB to Straight-Through RS232 Serial Adapter Applications: Ideal for connecting serial devices to laptops or tablet PCs through the USB port Connect to and monitor/control industrial sensors Connect bar code scanners and other serial devices to a USB port Connect a serial modem, digital camera, or PDA with serial sync to your PC's USB port Connect to automotive ODB/ODBII sensor adapters that use serial connectivity

Features
Features	Cable Type: SerialCable Length: 3 ftConnector on First End: 1 x 9-pin DB-9 Male RS-232 SerialConnector on Second End: 1 x Type A Male USB 2.0 USBColor: GrayPackage Contents: USB to RS232 DB9/DB25 Serial Adapter Cable - M/MDB9 to DB25 pin AdapterGreen Compliant: YesGreen Compliance Certificate/Authority: RoHSLimited Warranty: 2 Year

Additional Information
First Listed on Newegg	September 24, 2010

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): Lifetime
Limited Warranty period (labor): Lifetime
Read full details

Return Policies

We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

Return for refund until: January 31, 2027
Return for replacement until: January 31, 2027
This item is covered by Newegg.com's Extended Holiday Return Policy.
Read full return policy for details.

Manufacturer Contact Info

The StarTech.com ICUSB232DB25 is a 3 ft USB-A-to-RS-232 serial adapter cable with a DB9 connector and included DB9-to-DB25 adapter, suited to users connecting legacy serial equipment—such as industrial sensors, barcode scanners, or modems—to a computer with USB.

Recommended For

IT and field-service technicians who use a laptop to configure or troubleshoot RS-232 equipment such as switches, PLCs, or other serial devices, and need a USB-A connection with a DB9 port.
Technicians or operators connecting legacy DB25 RS-232 equipment to a computer; the included DB9-to-DB25 adapter supports this connector setup.
Retail, logistics, or lab staff who need to connect a compatible RS-232 barcode scanner, receipt printer, scale, or similar serial peripheral to a laptop or desktop.
Users keeping older RS-232 peripherals in service who want a short, 3-foot USB-A adapter cable instead of a computer with a built-in serial port.

Spec Summary

Attribute	Value
Best For	Adding an RS-232 serial connection to a laptop or desktop for compatible serial devices such as scanners, modems, sensors, and automotive diagnostic adapters
Serial Communication	RS-232 transfer up to 250 Kbps, with configurable 4–8 data bits, 1, 1.5, or 2 stop bits, five parity options, three flow-control options, and a 512-byte bidirectional FIFO buffer
Connectors And Cable	3 ft USB-A male to DB9 male serial cable, with a DB9-to-DB25 pin adapter for 25-pin RS-232 connections; male-to-male connectors
USB Interface And Operation	USB 2.0 full-speed interface with transfer speeds up to 12 Mbps; plug-and-play and hot-swap support
Power And Compatibility	USB powered with no external power adapter required; supports remote wake-up from modem input signals and USB power management. Compatible with the listed Windows, Mac OS, Linux, Windows Embedded, Windows CE, Windows Mobile, and PocketPC versions
Chipset And Certification	Prolific PL-2303HXD chipset; Microsoft WHQL-certified drivers and EIA RS-232-C compliant
Environmental Limits	Operating temperature: 0–60°C; storage temperature: -20–80°C; humidity: 0–90% RH
Physical Details	Weight: 2.47 oz (70 g); RoHS compliant; 2-year limited warranty
Model Identifiers	StarTech.com ICUSB232DB25

Best Sellers

StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

Learn more about the STARTECH ICUSB232DB25

Customer Reviews of the STARTECH ICUSB232DB25

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Recommended For

Spec Summary

Item#: N82E16812200738

Best Sellers

StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

Learn more about the STARTECH ICUSB232DB25

Customer Reviews of the STARTECH ICUSB232DB25

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Recommended For

Spec Summary