
USB to RS232 DB9/DB25 Serial Adapter Cable - M/M
StarTech ID: ICUSB232DB25
The ICUSB232DB25 USB to RS232 DB9/DB25 Serial Adapter Cable (M/M) lets you connect 9-pin (DB9) or 25pin (DB25) RS232 serial devices to your laptop or desktop computer through a USB port, as though the
computer offered an onboard serial port. The integrated 3-foot (0.9 meter) cable allows it to be connected
directly from the serial device to the computer without requiring additional cables.
A cost-effective solution that bridges the compatibility gap between modern computers and legacy serial
peripherals, this high quality USB/RS232 Serial Adapter cable ships with a DB-9 to DB-25 adapter for
connection to varied serial equipment.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
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
www.startech.com
1 800 265 1844

Features
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
3ft cable length
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
www.startech.com
1 800 265 1844

Technical Specifications
Warranty 2 Years
Bus Type USB 2.0
Chipset ID Prolific - PL-2303
Interface Serial
Port Style Cable Adapter
Ports 1
Data Bits 4, 5, 6, 7, 8
FIFO 512 Bytes
Flow Control None, Xon/ Xoff, Hardware
Max Baud
Rate
230.4 Kbps
Parity None, Even, Odd, Mark, Space
Serial
Protocol
RS-232
Stop Bits 1, 1.5, 2
Connector
Type(s)
1 - USB A (4 pin) Male
External
Ports
1 - DB-25 (25 pin; D-Sub) Male
External
Ports
1 - DB-9 (9 pin; D-Sub) Male
Microsoft
WHQL
Certified
Yes
OS
Compatibility
Windows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64), 2000, ME, 98SE, XP
Embedded, POS Ready 2009, Embedded System 2009, CE 4.2/5.2, Windows Mobile 5/6,
PocketPC 2003 / 2000
Windows Server® 2012, 2008 R2, 2003
Mac OS® 10.x (Tested up to 10.10)
Linux 2.4.x - 3.9.x
Cable
Length
3 ft [0.9 m]
Color Gray
Enclosure
Type
Plastic
Product 3 ft [0.9 m]
www.startech.com
1 800 265 1844

Length
Product
Weight
2.5 oz [70 g]
Humidity 5~85% RH
Operating
Temperature
0°C to 70°C (32°F to 158°F)
Storage
Temperature
-40°C to 85°C (-40°F to 185°F)
Shipping
(Package)
Weight
3.2 oz [90 g]
Included in
Package
1 - 3ft USB to RS232 Cable
Included in
Package
1 - DB9 to DB25 Serial Adapter
Included in
Package
1 - Driver CD
Included in
Package
1 - Manual
Certifications, Reports and Compatibility
www.startech.com
1 800 265 1844