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Black 6 ft USB Type-A to DB-9 serial adapter cable with thumbscrews

Sabrent

Sabrent CB-FTDI 6 ft USB 2.0 to Serial DB-9 RS-232 Adapter Cable

SKU CH-0R51-ZXA97

Connects a USB port to a 9-pin DB-9 RS-232 serial device with a 6 ft copper cable and FTDI chipset

  • Connector count2
  • Connector details1 x Type A Male USB 2.0 USB to 1 × 9-pin DB-9 Male RS-232 Se
  • Connector genderMale to Male
  • Conductor typeCopper Conductor
  • Product typeUSB 2.0 to Serial (9-Pin) DB-9
  • Product colorBlack
  • Connect legacy serial gear via modern USB 2.0 ports
  • Six-foot cable reaches equipment without strain
  • Male thumbscrews lock the DB-9 connector securely
  • FTDI chipset handles 96-byte buffers for reliable data flow
  • Broad OS support from Windows 98SE through Windows 10 and Linux 2.4+

USB 2.0 to DB-9 serial adapter

The Sabrent CB-FTDI cable connects a USB 2.0 Type-A port to a 9-pin DB-9 male RS-232 serial connector. It suits technicians maintaining legacy industrial equipment, point-of-sale hardware or networking gear that lacks native USB. The six-foot copper conductor provides reach across a bench or rack. Driver support spans Windows 98SE through 10, Mac OS 9.1 and later, and Linux 2.4 or above.

Low-power passive operation

The adapter draws bus power from the USB 2.0 host and adds no active cooling, so it runs silently with negligible thermal impact. Automatic handshake mode and a 96 byte buffer for each direction smooth data flow without IRQ conflicts. Remote wake-up and power-management support let the host suspend the link when idle. Compliance with USB 1.1 and 2.0 keeps current draw within standard port limits.

Driver CD and thumbscrew security

A bundled driver CD supplies the FTDI virtual COM-port installer for systems without automatic recognition. Male thumbscrews on the DB-9 end lock the connector firmly, preventing accidental disconnects in vibration-prone environments. The package contains only the cable and the CD; no null-modem adapter, gender changer or additional cabling is included. Buyers needing USB-C host connectivity or multi-port expansion will need a separate solution.

How it compares

Measured against everything we stock in RS-232 Serial Cables, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 64% of the 93 comparable items (median $21.99).

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Specifications

Product
Brand nameSABRENT
Model nameCB-FTDI
Product typeUSB 2.0 to Serial (9-Pin) DB-9
Product colorBlack
Ports & slots
Connector count2
Connector details1 x Type A Male USB 2.0 USB to 1 × 9-pin DB-9 Male RS-232 Serial
Connector genderMale to Male
Size & build
Overall length6 ft (1.83 m)
Conductor typeCopper Conductor
Shipping weight0.15 kg
Package size282 × 243 × 23 mm

Questions about this item

How do I install the Sabrent CB-FTDI adapter cable and what step is often missed?

Plug the Type A Male USB 2.0 connector into the computer and the 9-pin DB-9 Male RS-232 end into the serial device, then install the driver from the included CD before use; the step often missed is installing the driver first.

What maintenance or replacement will the Sabrent CB-FTDI cable need over time?

The copper conductor and male thumbscrew connectors are passive components with no moving parts, so no scheduled maintenance is required; replace the cable only if physical damage occurs to the connectors or jacket.

What limit appears first during sustained data transfers with the Sabrent CB-FTDI adapter?

The 96 byte buffer for each upstream and downstream transfer is the first bottleneck under continuous load, limiting throughput before the USB 2.0 interface saturates.

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