The USB 2.0 to 4xRS232 Cable, Digitus DA-70159 is compared against several similar serial communication cables and adapters, including the USB 2.0 to 2x RS232 Cable Digitus DA-70158, Equip USB-A to Serial (DB9) Cable M/M 1.5m Black, USB 2.0 to 2x Serial Adapter Cable InLine 33305M, Goobay USB Serial RS232 Converter Mini Transparent 1.5m USB Type-A, and USB to RS232 Serial Adapter Cable StarTech ICUSB232DB25. All these products are designed to connect legacy RS232 devices to modern USB ports, but the primary distinction of the Digitus DA-70159 is its ability to support up to four serial devices simultaneously, whereas most alternatives are limited to one or two.
⚙️ Below is a comparison of technical specifications, evaluating cable length, number of supported RS232 ports, connector types, and design characteristics for each product.
| Parameter | Digitus DA-70159 | Digitus DA-70158 | Equip 133391 | InLine 33305M | Goobay 95436 | StarTech ICUSB232DB25 | Practical significance |
|---|
| Cable length | 1.5 m | 1.5 m | 1.5 m | 1.5 m | 1.5 m | 0.9 m | Most options offer a standard 1.5-meter length for flexible placement, while the StarTech model is shorter at 0.9 meters. |
| Number of RS232 ports | 4 | 2 | 1 | 2 | 1 | 1 (with DB9/DB25 adapters) | The Digitus DA-70159 provides the highest port density in this comparison, enabling four simultaneous connections. |
| Host interface | USB Type-A | USB Type-A | USB Type-A | USB Type-A | USB Type-A | USB Type-A | All products connect to host computers via standard USB Type-A ports. |
| Design and build | Black design, suited for industrial and commercial use | Standard design | Black, 77g weight, CE and RoHS certified | Black design with two Sub-D connectors | Transparent mini converter design | Grey, compact, CE and RoHS certified | Physical designs range from standard black and transparent housings to certified compliance models. |
◎ The table below evaluates product suitability for various use cases to help determine the best option depending on your equipment requirements.
| Use case | Recommended product | Why |
|---|
| Connecting four RS232 devices simultaneously | USB 2.0 to 4xRS232 Cable, Digitus DA-70159 | It is the only model in the comparison that supports four independent serial connections through a single USB port. |
| Connecting two RS232 devices | USB 2.0 to 2x RS232 Cable Digitus DA-70158 or USB 2.0 to 2x Serial Adapter Cable InLine 33305M | Both options accommodate two serial devices efficiently without port redundancy. |
| Connecting a single standard RS232 device | Equip USB-A to Serial (DB9) Cable M/M 1.5m Black, Goobay USB Serial RS232 Converter Mini Transparent 1.5m USB Type-A or StarTech ICUSB232DB25 | Ideal for setups requiring only one serial connection for basic peripherals or diagnostics. |
The USB 2.0 to 4xRS232 Cable, Digitus DA-70159 differs from alternatives by delivering four dedicated RS232 connections over a single USB interface while maintaining a convenient 1.5-meter cable length. It is most suitable for industrial environments, engineers, and power users who need to manage multiple legacy serial devices concurrently. A buyer should prefer this model over the alternatives when maximum port density in a single cable solution is required.
