--- product_id: 147883123 title: "Model:SH-RJ12A" brand: "dsd tech" price: "ā‚¬ 30.31" currency: EUR in_stock: true reviews_count: 13 category: "Dsd Tech" url: https://www.desertcart.at/products/147883123-model-sh-rj12a store_origin: AT region: Austria --- # 5.9FT length USB 2.0 FTDI Chipset Model:SH-RJ12A **Brand:** dsd tech **Price:** ā‚¬ 30.31 **Availability:** āœ… In Stock ## Summary > šŸ”— Connect with Confidence! ## Quick Answers - **What is this?** Model:SH-RJ12A by dsd tech - **How much does it cost?** ā‚¬ 30.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/147883123-model-sh-rj12a) ## Best For - dsd tech enthusiasts ## Why This Product - Trusted dsd tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - ā€¢ **Robust Design:** Built with industrial-grade FTDI FT232RL chipset for unmatched stability. - ā€¢ **Compact & Portable:** Lightweight design makes it easy to carry and use anywhere. - ā€¢ **User-Centric Support:** Enjoy peace of mind with 1-year replacement and prompt customer service. - ā€¢ **Seamless Connectivity:** Experience effortless communication with your APC PDU/ATS. - ā€¢ **Versatile Compatibility:** Works flawlessly with multiple APC PDU ATS models. ## Overview The DSD TECH SH-RJ12A USB to RJ12 Serial Cable is a high-quality communication device designed for seamless interaction with APC PDU and ATS systems. Featuring a robust FTDI FT232RL chipset, this 5.9FT cable ensures reliable performance in both indoor and outdoor settings. With a focus on customer satisfaction, it comes with a 1-year replacement guarantee and dedicated technical support. ## Description Product description Model:SH-RJ12A The SH-RJ12A is a USB to RJ12 6P4C serial cable designed to configure and manage APC PDU/ATS units. It uses a stable FTDI chipset, replaces APC part# 940-0144A, and is plug-and-play. This 1.8-meter cable is a dedicated tool for IT professionals and network administrators. Direct Replacement for Your APC Gear This cable is the official substitute for APC part# 940-0144A. It is specifically engineered to reliably configure and manage a wide range of APC PDU and ATS models, ensuring seamless integration and performance. Built with a High-Stability FTDI Chipset At its heart is the industrial-grade FTDI FT232RL chip(or compatible FT232RNL), guaranteeing robust and dependable data transmission. This built-in stability allows it to handle complex communication tasks with your critical network equipment effortlessly. Effortless Installation Across Platforms Get started quickly with broad driver support for Windows, Mac, and Linux. The cable is conveniently bus-powered through your USB port, requiring no external power adapter or complicated setup. Specification Review: Finally Got Reliable Communication with My APC UPS - Worked with Modern PCs Without Needing Old Hardware A lot of APC UPS units still rely on serial-style communication, which becomes annoying when modern computers no longer have serial ports. This cable let me connect directly through USB without digging up an old desktop or adapter chain. Communication Was Stable Once Configured After selecting the correct COM port, I was able to: Access UPS settings Monitor status information Communicate with management software Configure shutdown behavior The connection stayed reliable without random disconnects. Review: Drivers already included in the OS, works great! - I bought this to connect to the RS232 port on an Eco Worthy 48V 100AH v3 battery and it worked great without modification. The device was auto detected and didn't need extra drivers. I was able to update firmware with no issues. ## Features - DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless.We have served more than 100,000 customers in Europe, North America and Japan. - FTDI FT232RL Chipset: Built-in industrial grade FTDI FT232RL chip, high stability, enough to handle a variety of complex situations. - Manage your APC PDU/ATS:When your APC PDU or ATS needs to be debugged or configured, you can use this USB to RJ12 Serial Cable to communicate with it. - Replacement for APC Part# 940-0144A. Suitable for the following APC PDU ATS models: AP77XX AP78XX AP79XX AP86XX AP88XX AP89XX - Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB to RJ12 6P4C Serial Cable.All questions will be answered within 1 working day. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07R2L22GW | | Best Sellers Rank | #261 in Serial Cables | | Brand | DSD TECH | | Brand Name | DSD TECH | | Cable Type | Serial | | Color | Black | | Compatible Devices | Laptop | | Compatible Phone Models | Potentially compatible with smartphones, specific models unknown | | Connectivity Technology | USB | | Connector Gender | Male-to-Male | | Connector Type | Rj12, Usb | | Customer Package Type | FFP | | Customer Reviews | 4.2 out of 5 stars 228 Reviews | | Data Transfer Rate | 3 MHz | | EU Spare Part Availability Duration | 2 Years | | Frequency | 2 MHz | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Item Weight | 56 Grams | | Manufacturer | DSD TECH | | Model | SH-RJ12A | | Model Name | SH-RJ12A | | Number of Items | 1 | | Number of Pins | 6 | | Other Special Features of the Product | Data Transfer | | Part Number | SH-RJ12A | | Recommended Uses For Product | PC | | Special Feature | Data Transfer | | Specification Met | USB-IF | | UPC | 734678382587 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** DSD TECH - **Connector Type:** Usb, Rj12 - **Cable Type:** Serial - **Compatible Devices:** Laptop - **Special Feature:** Data Transfer ## Images ![Model:SH-RJ12A - Image 1](https://m.media-amazon.com/images/I/71e2mVbSI+L.jpg) ![Model:SH-RJ12A - Image 2](https://m.media-amazon.com/images/I/71uRoGncNmL.jpg) ![Model:SH-RJ12A - Image 3](https://m.media-amazon.com/images/I/71Z22R09JOL.jpg) ![Model:SH-RJ12A - Image 4](https://m.media-amazon.com/images/I/51B6xNkJT6L.jpg) ![Model:SH-RJ12A - Image 5](https://m.media-amazon.com/images/I/61sKh9xlasL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does the usb follow rs232 wiring protocol? iā€™m hoping this eliminates buying 2 cables: rj12 to 9 pin and a 9 pin to usb with ftdi cable.** A: Tech answer: Not really. The driver interface of this chip does follow the RS232 Protocol however, the voltage read out is limited to +5V if your device uses true RS232 wiring then this device will not work. True RS232 wiring has a reversed(voltage shift) voltage that ranges from -15v to +15v (3V min register). In short, unless your device only needs RXD/TXD/GRD within 0 to +5V don't expect it to work. **Q: Will this cable allow me to connect a headset with mic (Plantronics CO52) to my computer to?** A: no, it is a usb to RS232 serial adapter with rj12 interface. It only applies to data communication. Not used for audio transmission. **Q: the title is labelled as 6p4c is it not 6p6c rj-12?** A: We confirm that this is the RJ12 interface cable. The RJ12 interface corresponds to a 6-core cable. But we only used 4 touch points of RJ12 interface . So that it can be compatible with 6P4C **Q: Does this cable create a virtual COM port?** A: Yes, Built-in FTDI FT232 chip. When you install the driver, a virtual serial COM port is created. ## Customer Reviews ### ā­ā­ā­ā­ā­ Finally Got Reliable Communication with My APC UPS *by J***. on May 25, 2026* Worked with Modern PCs Without Needing Old Hardware A lot of APC UPS units still rely on serial-style communication, which becomes annoying when modern computers no longer have serial ports. This cable let me connect directly through USB without digging up an old desktop or adapter chain. Communication Was Stable Once Configured After selecting the correct COM port, I was able to: Access UPS settings Monitor status information Communicate with management software Configure shutdown behavior The connection stayed reliable without random disconnects. ### ā­ā­ā­ā­ā­ Drivers already included in the OS, works great! *by R***R on December 31, 2025* I bought this to connect to the RS232 port on an Eco Worthy 48V 100AH v3 battery and it worked great without modification. The device was auto detected and didn't need extra drivers. I was able to update firmware with no issues. ### ā­ā­ā­ā­ā­ What is ordered *by C***O on January 18, 2026* Exactly what I ordered ## Frequently Bought Together - DSD TECH SH-RJ12A USB to RJ12 6P4C Serial Cable for APC PDU ATS(5.9FT/1.8M) - OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)ā€¦ - USB to RJ11/12 6P4C RS232 Serial Cable Adapter with FT232RNL Chip for APC PDU UPS 940-0144 BMS Battery --- ## Why Shop on Desertcart? - šŸ›’ **Trusted by 1.3+ Million Shoppers** ā€” Serving international shoppers since 2016 - šŸŒ **Shop Globally** ā€” Access 737+ million products across 21 categories - šŸ’° **No Hidden Fees** ā€” All customs, duties, and taxes included in the price - šŸ”„ **15-Day Free Returns** ā€” Hassle-free returns (30 days for PRO members) - šŸ”’ **Secure Payments** ā€” Trusted payment options with buyer protection - ā­ **TrustPilot Rated 4.5/5** ā€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/147883123-model-sh-rj12a](https://www.desertcart.at/products/147883123-model-sh-rj12a) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-06-04*