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Black USB-A to DB-9 serial adapter cable, 1.8 m

Rocstor

Rocstor Y10C876-B1 FTDI USB to Serial RS232 Adapter Cable 6 ft 1.8 m 115.2 kbit/s

SKU CH-5JSF-T300G MPN Y10C876-B1

Adds a 9-pin DB-9 serial port to a USB 2.0 Type-A socket with FTDI chipset and COM retention at 115.2 kbit/s

  • FTDI chipset retains COM port settings across reboots
  • 6 ft cable reaches legacy serial equipment easily
  • USB 2.0 Type A plug fits modern notebooks and desktops
  • 2 kbit/s transfer rate handles industrial and console tasks
  • DB-9 male connector mates directly with standard RS-232 ports

Rocstor FTDI USB-Serial Adapter Cable

The Rocstor Y10C876-B1 is a six-foot adapter cable that connects a DB-9 RS-232 serial device to a USB 2.0 Type-A port. It uses an FTDI chipset to provide reliable data transfer at up to 115.2 kbit/s. The male DB-9 and male USB-A connectors suit notebooks, desktops and monitors. COM port retention helps maintain the same port assignment after reboots.

Engineers maintaining legacy serial equipment

This cable suits technicians who need a direct USB link to industrial controllers, network gear or scientific instruments that still use RS-232. It is not for users who require multiple serial ports from a single USB connection. Buyers needing galvanic isolation or higher baud rates should look at specialised industrial adapters instead.

Check your host has a free USB-A port

Verify the target device uses a standard male DB-9 RS-232 interface with compatible pin-out. Confirm your operating system supports FTDI virtual COM port drivers for the version you run. Ensure the 1.8 metre cable length reaches between the host and the serial equipment without strain.

How it compares

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

Price $20.99
Pricier than about 60% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Brand nameRocstor
Size & build
Shipping weight0.07 kg
Package size152 × 114 × 19 mm

Questions about this item

Does my computer need a USB 2.0 Type A port to use the Rocstor Y10C876-B1 adapter?

Yes, the cable terminates in a USB 2.0 Type A male connector, so an available USB 2.0 Type A port is required for connection.

Will the DB-9 RS-232 male end connect to legacy serial equipment I still use?

The adapter provides a standard 9-pin DB-9 RS-232 serial male interface, compatible with legacy serial devices that accept this connection.

How can I verify the FTDI chipset is recognised and COM retention works after setup?

Open Device Manager, confirm the port appears as a USB Serial Port with a persistent COM number that remains assigned after reboot or reconnection.

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