SABRENT
SABRENT USB 2.0 to Serial (DB9 RS232) Adapter Cable
Bottom line: The SABRENT USB 2.0 to Serial Adapter Cable ($9.99 on Amazon as of 2026-10-20 22:15 UTC): Standard DB9 RS-232 end fits console ports, modems, and industrial controllers; main trade-off: manual driver install needed on many systems; not reliably plug-and-play.
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*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Standard DB9 RS-232 end fits console ports, modems, and industrial controllers
- ✓ Configurable COM port and baud rate for matching legacy device settings
- ✓ Prolific chipset with published Windows 11/10/8/7, macOS, and Linux support
Cons
- ✗ Manual driver install needed on many systems; not reliably plug-and-play
- ✗ Prolific chipsets are a common target of counterfeit-detection driver blocks
- ✗ DB9 male end alone; null-modem or gender changer often needed separately
- ✗ Fixed-length captive cable, so no swapping in a longer run
Manufacturer description
The SABRENT CB-DB9P bridges the gap between a modern USB port and the RS-232 serial gear that refuses to retire. Built around a Prolific chipset, this adapter cable terminates in a standard DB9 connector, so it drops straight onto console ports, dial-up modems, industrial controllers, CNC gear, lab instruments, and vintage PC peripherals that never got a USB successor. You configure COM port assignment and baud rate to match whatever you are talking to, which is what makes it usable for both a 9600-baud switch console and faster instrumentation links. SABRENT lists support for Windows 11…
SpecPicks Verdict
SpecPicks scored SABRENT USB 2.0 to Serial Adapter Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. SABRENT's cables & connectors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for cables & connectors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Do I need to install a driver for this adapter?
Often yes. SABRENT states some systems recognize the adapter automatically while others require manual driver installation. Plan to download the Prolific driver for your OS during setup.
Will it work on Windows 11 and on a Mac?
SABRENT lists Windows 11, 10, 8, and 7 plus macOS and Linux. Functionality can vary with driver availability for your specific OS version, so check the current driver on the product listing.
Can I change the COM port number and baud rate?
Yes. COM port assignment and baud rate are configurable so you can match the settings your serial device expects, such as a 9600-baud switch console.
What kind of devices can I connect with it?
Anything speaking RS-232 over DB9: modems, industrial equipment, network device console ports, and legacy hardware. Compatibility still depends on the connected device and its software.
Is it worth it at this price compared with other adapters?
It is among the most-reviewed options in its class. Check the listing for current price and warranty terms.
Key Features
- USB to Serial Connectivity: Connect RS-232 serial devices such as modems, industrial equipment, and legacy hardware to a USB port using a standard DB9 interface
- Driver Support Required: While some systems may recognize the adapter automatically, others require manual driver installation for proper functionality
- Device Compatibility: Works with devices that support RS-232 serial communication; compatibility depends on the connected hardware and software configuration
- Adjustable Settings: COM ports and baud rates can be configured to match your device requirements for stable communication
- Multi-Platform Support: Compatible with Windows, macOS, and Linux; functionality may vary depending on driver support and system setup
Full Specifications
| Brand | SABRENT |
|---|---|
| Color | Grey |
| Gauge | 4.46 |
| Model | CB-DB9P |
| Cable Type | Parallel Cable |
| Item Shape | Round |
| Model Name | CB-DB9P |
| Unit Count | 1.0 Count |
| Item Length | 2.5 Feet |
| Part Number | CB-DB9P |
| Connectivity | USB |
| Compatibility | Mac, Linux |
| Connector Type | USB Type A |
| Number of Pins | 9 |
| Maximum Current | 2 Amps |
| Number of Items | 1 |
| Special Feature | High Speed |
| Connector Gender | Male-to-Female |
| Specification Met | No |
| Compatible Devices | Modem |
| Full listing title | SABRENT USB 2.0 to Serial (DB9 RS232) Adapter Cable, Prolific Chipset, Driver Support Required for Some Systems, Windows 11/10/8/7, macOS, Linux (CB-DB9P) |
Ready to buy?
SABRENT USB 2.0 to Serial (DB9 RS232) Adapter Cable, Prolific Chipset, Driver Support Required for Some Systems, Windows 11/10/8/7, macOS, Linux (CB-DB9P) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
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