Description
Product Overview
The StarTech Serial Null Modem Cable is a 10‑foot (3.05 m) DB9 female‑to‑female serial cable designed for reliable signal transfer between modem‑type devices. Constructed from a durable gray PVC jacket, the cable features a round shape with nine precisely aligned pins to maintain data integrity. Weighing just 0.32 lb (5.1 oz), it offers a lightweight yet robust solution for indoor installations. The cable complies with a 50‑watt rating, ensuring it can handle typical serial communication loads without degradation. Its standard packaging protects the cable during shipping while keeping the footprint minimal.
Usage
This cable excels in environments where stable serial communication is essential. Ideal for connecting legacy modems, industrial control systems, and data acquisition hardware, it supports signal transfer tasks such as firmware updates, diagnostics, and real‑time data logging. The 10‑foot length provides flexibility for workstation setups, server rooms, and lab benches, allowing devices to be positioned comfortably without strain on connectors. 
Why Choose Us
StarTech is renowned for manufacturing high‑quality connectivity solutions, and this null modem cable is no exception. Each unit undergoes rigorous testing to meet a 4.7‑star rating from over a thousand verified customers, reflecting consistent performance and durability. The cable’s indoor‑rated construction resists wear from frequent handling, and the precise DB9 female‑to‑female gender eliminates the need for additional adapters. Backed by a reputable brand and a clear warranty, you can trust this cable to deliver uninterrupted data flow.
Key Features
- 10‑foot length offers ample reach for most workstation and server configurations.
- DB9 female‑to‑female connectors ensure direct, adapter‑free connections.
- Durable gray PVC jacket provides protection against abrasion and indoor wear.
- 9‑pin design guarantees accurate signal mapping for reliable data transfer.
- Rated for 50 watts, supporting typical serial communication power requirements.
FAQ
What devices are compatible with this cable?
The cable works with any equipment that uses a DB9 serial interface, including modems, industrial controllers, POS systems, and legacy computers.
Can this cable be used outdoors?
It is rated for indoor use only. For outdoor environments, a cable with UV‑resistant jacket and weather sealing is recommended.
Is a null modem configuration required for my devices?
Yes, the cable is wired as a null modem, crossing transmit and receive lines to enable direct device‑to‑device communication without a host computer.
What is the warranty period?
StarTech provides a one‑year limited warranty covering manufacturing defects.
How does the cable differ from a straight‑through serial cable?
A straight‑through cable maintains the same pinout on both ends, while this null modem cable swaps transmit and receive pins, allowing two similar devices to communicate directly.
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