We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
10ft USB to null modem serial adapter cable with DB9 connectors

StarTech.com

STARTECH 10ft USB to Null Modem Serial Adapter Cable 232

SKU CH-VBVA-23NRS

Connects USB to null-modem serial ports with 10 ft cable and FTDI chip for reliable data transfer

  • 10ft cable reaches legacy serial devices across workspaces
  • Null-modem wiring connects two DTE ports without extra hardware
  • FTDI chipset provides stable RS-232 data transfer on Windows, macOS, ChromeOS and Linux
  • Level-4 ESD protection shields connected equipment from static discharge
  • Rugged TPE jacket resists wear in industrial and office environments

Industrial Serial Bridge

This 10ft USB to Null Modem adapter connects legacy RS232 equipment to modern computers without a native COM port. The FTDI chipset provides reliable COM port retention across reboots so industrial instruments, PLCs and networking gear keep the same port assignment. Rugged TPE jacketing resists abrasion in cabinet and bench environments.

Sustained Data Integrity

Level-4 ESD protection shields the FTDI bridge from discharge events common in factory floors and wiring closets. The null-modem crossover wiring maintains signal integrity over the full 10ft length without external power. Drivers for Windows, macOS, ChromeOS and Linux keep the virtual COM port stable during long logging sessions and overnight transfers.

Plug-and-Play Wiring

Interchangeable DB9 screws and nuts let you secure the connector whether the panel uses male or female posts. The Quick-Start Guide walks through driver installation and port verification in minutes. Buyers who need a gender-matched straight-through cable or a multi-port rackmount adapter will need a different product.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 81% of the 1,755 comparable items (median $18.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameStarTech
Size & build
Shipping weight0.45 kg
Package size25 × 25 × 25 mm

Questions about this item

Does the 10ft USB-to-null-modem cable draw enough power from the USB-A port to run all day without an external supply?

Yes — the adapter is bus-powered from the USB-A connection, so no separate power brick is needed for continuous operation.

What must already be present on the target device for this 232 adapter to communicate?

A free DB9 serial port (male or female) that accepts the interchangeable screws/nuts supplied with the cable.

Will the 10ft cable work reliably with legacy RS-232 gear that uses older voltage levels?

The FTDI chipset handles standard RS-232 signalling and includes Level-4 ESD protection, so it interoperates with older serial equipment.

More in Other Adapters & Couplers

Similar items