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Description
StarTech.com USB to RS232/RS485/RS422 4 Port Serial Hub Adapter - Industrial Metal USB 2.0 to DB9 Serial Converter - Din Rail MountableTransform a single USB 2. 0 port into four versatile COM ports with this rugged StarTech serial hub. Engineered for industrial environments, the four port USB to RS232 RS422 RS485 adapter comes in a durable metal enclosure and is designed for DIN rail mounting, making it ideal for control panels, factory floors, labs, and field deployments. With support for multiple serial protocols, researchers, technicians, and engineers can connect a wide range of
Transform a single USB 2.0 port into four versatile COM ports with this rugged StarTech serial hub. Engineered for industrial environments, the four-port USB to RS232/RS422/RS485 adapter comes in a durable metal enclosure and is designed for DIN rail mounting, making it ideal for control panels, factory floors, labs, and field deployments. With support for multiple serial protocols, researchers, technicians, and engineers can connect a wide range of legacy devices—such as CNC machines, barcode scanners, robotic controllers, and data loggers—without sacrificing performance or reliability. This USB 2.0 to DB9 serial converter delivers flexible, scalable connections while keeping your workspace organized and future-ready.
- Four serial ports from one USB connection: Convert a single USB 2.0 port into four COM ports, enabling rapid expansion for legacy devices and equipment that still rely on RS-232, RS-422, or RS-485 interfaces.
- Supports RS-232, RS-422, and RS-485 protocols: Each of the four ports can be configured to the appropriate protocol, providing broad compatibility with a diverse range of industrial instruments and peripherals.
- Industrial metal enclosure and DIN rail mounting: Built for harsh environments, the durable metal housing and ready DIN rail mounting simplify integration into control cabinets, enclosures, or machine panels.
- Plug-and-play USB 2.0 connectivity with broad OS support: Easy setup on compatible systems with minimal configuration; USB bus power eliminates the need for a separate power supply in many deployments.
- Independent, scalable serial channels with diagnostic indicators: Four isolated channels offer flexible configurations, while status LEDs provide quick fault diagnosis and connection verification at a glance.
Technical Details of StarTech.com USB to RS232/RS485/RS422 4 Port Serial Hub Adapter
- USB interface: USB 2.0 (backwards compatible with USB 1.x) for high-speed data transfer
- Port count: 4 external serial ports with DB9 connectors
- Supported protocols: RS-232, RS-422, RS-485 (each port configurable per device requirements)
- Enclosure and mounting: Industrial metal housing with DIN rail mounting capability for modular installation
- Power: Bus-powered via USB; no additional power supply required in typical setups
- Operating system support: Broad compatibility with Windows and Linux environments; driver availability from StarTech
- Connector type: Four DB9 serial connectors for easy connection to standard serial equipment
- Dimensions and weight: Not specified in the available information
- UPC/SKU: Not provided in the accessible specifications
How to install StarTech.com USB to RS232/RS485/RS422 4 Port Serial Hub Adapter
- Connect the USB 2.0 connector on the hub to a free USB port on your computer or compatible device.
- Mount the hub on a DIN rail inside your equipment cabinet or place it in a suitable enclosure for easy access and organization.
- Attach your serial devices to the four DB9 ports, selecting the appropriate RS-232, RS-422, or RS-485 configuration for each device.
- Power on the system and install any necessary drivers if prompted by your operating system. Visit StarTech’s official site to obtain the latest drivers and documentation.
- Configure each serial port within your software or operating system to the required baud rate, parity, data bits, and stop bits. Verify port availability in Device Manager (Windows) or /dev/ttyS*/ttyUSB* (Linux).
Frequently asked questions
- What protocols are supported across the ports? The adapter supports RS-232, RS-422, and RS-485, and each port can be configured independently to match device requirements.
- How many serial ports are provided? The unit delivers four independent serial ports accessible via four DB9 connectors.
- Do I need a separate power supply? The device is typically bus-powered via USB 2.0, eliminating the need for an external power source in standard configurations.
- Can I mount it on a DIN rail? Yes. The enclosure is designed for DIN rail mounting to facilitate integration into control panels and industrial cabinets.
- Which operating systems are supported? Windows and Linux are commonly supported with drivers provided by StarTech; always check the latest compatibility on the product page for your OS.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 1
Dont wait! Assemble right away! Just in case you need to return it.
Color: Black, Size: 22" - 4 Panel
Ok, I like the idea of this but the assembly is frustrating. One side lined up perfectly with the holes however, the small bars that connect the screen to base is not lining up. I think it's do the fabric the screen or divider is made of. It's not stretchy. I brought this months ago and just opened it today. I'm upset and don't even think returning it is possible. If the material was a bit longer or stretchy to give a little room to work with this divider would be great. However, I'm not sure what I can use it for since I'm unable to attach it to the bottom. Beware! Don't wait like me. Tip for the manufacturer. Next time invest in Velcro dividers so the fabric can be adjusted with ease. Literally if I take the screen off the frame aligns perfectly. However, it defeats its purpose of privacy. I might buy some material myself and create a more flexible divider. Or I'll buy Velcro myself and attach to the bottom. I don't know yet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
★★★★★ 5
Great value for price. Cute, lightweight. Could be used anywhere.
Size: 3 Panel, Color: White
Nice, lightweight. Good value for price. It's exactly what I needed for my hallway to keep my cats separate from each other. I used two zip ties to eyescrews in door trim and it opens up perfect to wall. Warm air gets thru and cats can see out/in. But can't get under or over. It's perfect for my use!!!!
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Reviewed in the United States on October 23, 2025
★★★★★ 5
Great seller and really nice items!
Size: 6 Panel, Color: White
These room dividers are really lovely. They are great quality and just perfect for providing privacy in a sunroom while still allowing light in to keep the room sunny. I highly recommend.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Nice divider!
Size: 4 Panel, Color: White
I use this as a "barrier" to keep my cat out of the guest room. I don't have to close the door anymore because the divider allows light and air through. Adds a nice touch to the decor, as well. Very lightweight and serves its purpose.
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Reviewed in the United States on January 3, 2026
★★★★★ 4
Good Room Divider
Size: 4 Panel, Color: White
This room divider worked great to mask my "utility area" in my living room because I'm low on storage space. It's functional and pleasing to the eye, but the quality could be better as there were pieces of debris on the unit and fraying strings. It also can tip over if not positioned just right. I do like the versatility of it though because even though it's a four panel I can fold in one of the panels and use the other three. Overall I like it, the price could be lower based on the quality but its good.
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Reviewed in the United States on September 30, 2025
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