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Green USB-A to DB-9 serial adapter cable, male-to-male connectors

VCOM International Ltd

VCOM International Ltd VC-USB/DB9 USB 2.0 Type A Male to Serial RS-232 DB-9 Male Green CU804

SKU CH-FRD5-AQQGD

Connects a USB 2.0 Type A port to a serial RS-232 DB-9 device in a green male-to-male cable

  • ColorGreen
  • Changer TypeUSB to DB9 (RS-232)
  • Connector AUSB 2.0 Type A Male
  • Connector BSerial RS-232 DB-9 Male
  • Connect legacy serial devices via USB 2.0 Type A
  • Green cable jacket aids quick visual identification in busy setups
  • DB-9 male connector mates directly with RS-232 ports
  • USB 2.0 interface provides broad host compatibility
  • Compact male-to-male design reduces cable clutter

What this cable does

This green USB 2.0 Type A to Serial RS-232 DB-9 cable connects legacy serial equipment to a modern USB port. It suits technicians, engineers and hobbyists who need a direct link for configuration, data logging or firmware updates on older hardware.

Behaviour during extended use

The adapter draws power from the USB 2.0 bus and maintains a stable RS-232 signal throughout long sessions. No external supply is required, so the link stays active during prolonged transfers or unattended monitoring tasks.

Check before ordering

Verify that the target device uses a DB-9 male RS-232 port and that your computer provides a standard USB 2.0 Type A socket. Confirm the operating system supports the cable’s driver so the virtual COM port appears correctly.

Highlights

  • Connect legacy serial devices via USB 2.0 Type A
  • Green cable jacket aids quick visual identification in busy setups
  • DB-9 male connector mates directly with RS-232 ports
  • USB 2.0 interface provides broad host compatibility
  • Compact male-to-male design reduces cable clutter

Specifications

BrandVCOM
ModelVC-USB/DB9
Part NumberCU804
ColorGreen
Changer TypeUSB to DB9 (RS-232)
Connector AUSB 2.0 Type A Male
Connector BSerial RS-232 DB-9 Male

Questions about this item

Does the USB 2.0 Type A Male connector draw noticeable power when the adapter runs all day?

The adapter is bus-powered from the USB 2.0 port, so it draws only the small current the serial device requires.

What must the computer already have for this green CU804 adapter to work?

A free USB 2.0 Type A port and an operating system that includes or can load a driver for the USB-to-RS-232 bridge chip.

Will the DB-9 Male end connect directly to my older RS-232 equipment without extra cables?

Yes, the DB-9 Male connector mates with standard RS-232 DB-9 female ports found on legacy serial devices.

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