SKU: 23218605786

Brainboxes 4 Port RS232 USB to Serial Server

Sale price$110.84 Regular price$123.16
Save 10%

Pay in installments of $30.79 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Brainboxes 4 Port RS232 USB to Serial ServerMeet the Brainboxes 4 Port RS232 USB to Serial Servera compact, robust gateway that unlocks reliable four port RS232 communication from any USB equipped laptop or PC. This USB to Serial Server turns a single USB port into four independent RS232 interfaces, letting you connect legacy equipment, test rigs, embedded controllers, barcode scanners, POS devices, or industrial controllers with ease. Built for performance and reliability, it delivers steady

Meet the Brainboxes 4 Port RS232 USB to Serial Server—a compact, robust gateway that unlocks reliable four-port RS232 communication from any USB-equipped laptop or PC. This USB to Serial Server turns a single USB port into four independent RS232 interfaces, letting you connect legacy equipment, test rigs, embedded controllers, barcode scanners, POS devices, or industrial controllers with ease. Built for performance and reliability, it delivers steady data throughput, generous buffering, and broad Windows compatibility to keep your serial workflows smooth, even in demanding environments.

  • Four independent RS232 ports on a single USB-to-serial server give scalable connectivity for complex setups. Each port operates with its own transmit and receive paths, so you can connect four separate devices—such as modems, printers, barcode scanners, PLCs, or laboratory instruments—simultaneously to one PC. This arrangement reduces USB adapter clutter, simplifies cabling, and keeps your workstation organized while preserving distinct data streams for every device. Whether you’re running a small lab, a retail environment, or a test bench, you gain flexible, reliable serial access without compromising performance.
  • High-speed data rates: up to 921,600 baud per port. The Brainboxes adapter is designed for speed without sacrificing reliability. Fast baud rates support data-intensive serial applications, enabling quick configuration tasks, rapid data logging, and responsive device control. Even with multiple channels active, the architecture maintains stable throughput and minimizes latency, ensuring that serial communication remains responsive for each connected device. This makes it ideal for real-time monitoring, data acquisition, and automation workflows that rely on timely serial data exchange.
  • Efficient FIFOs: 128-byte transmit and 256-byte receive buffers per channel. The buffering architecture is engineered to absorb bursts and smooth transmission. A 256-byte receive FIFO helps prevent data loss when devices transmit data quickly, while a 128-byte transmit FIFO provides a comfortable reservoir for outgoing data, reducing the risk of stalls in busy systems. Together, these buffers support longer, uninterrupted serial sessions and improve performance in polling, event-driven, or streaming serial applications across all four ports.
  • 1 Mbit line drivers: strong signal drive for reliable long-distance or noisy environments. The robust line drivers help maintain signal integrity across cables and electrical environments where interference or length could degrade performance. Whether you’re connecting to devices placed away from the host, operating in a factory floor, or using longer RS232 cables, the 1 Mbit drive capability helps preserve clean, error-free communication and reduces the need for signal-repeaters or retries.
  • Windows drivers included: supports Windows 32-bit and 64-bit operating systems for quick setup. The driver package is designed to integrate smoothly with common Windows environments, presenting four virtual COM ports that map directly to the four RS232 channels. With plug-and-play simplicity and straightforward software configuration, you can get up and running quickly with your serial-enabled applications, automation scripts, or legacy devices on Windows desktops and laptops.

Technical Details of Brainboxes 4 Port RS232 USB to Serial Server

  • Ports: 4 x RS232 serial ports over a USB connection
  • Interface: USB connection to the host computer (USB-powered, no separate supply required for standard operation)
  • Baud rate support: Up to 921,600 baud per port
  • Transmit FIFO: 128 bytes per port
  • Receive FIFO: 256 bytes per port
  • Line drivers: 1 Mbit per second per port
  • Driver support: Windows 32-bit and Windows 64-bit drivers included

How to install Brainboxes 4 Port RS232 USB to Serial Server

  • Connect the adapter to an available USB port on your Windows PC or laptop. The device is powered through USB, so no external power supply is required for standard operation.
  • Install the included Windows drivers (32-bit and 64-bit) when prompted by the operating system. If automatic installation does not occur, run the driver installer from the package or contact support for the latest Windows driver package. After installation, Windows will recognize the device and prepare four virtual COM ports.
  • Open Device Manager to confirm four new COM ports are assigned to the USB-to-serial adapter. Each port appears as an individual COM port, allowing software to address devices independently.
  • Configure your terminal programs or software to use the appropriate COM ports, matching the required baud rate, parity, data bits, and stop bits for each connected device. Save these configurations to simplify repeated use.
  • Test each connection with a loopback or device-specific test to verify signal integrity and data reliability. If needed, reassign COM numbers or adjust settings to resolve conflicts and ensure stable communication across all four ports.

Frequently asked questions

  • What is the Brainboxes 4 Port RS232 USB to Serial Server? It is a four-port USB-to-RS232 serial adapter that provides four independent serial interfaces over a single USB connection, designed to connect multiple RS232 devices to a computer with ease.
  • How many ports does it have? Four RS232 ports.
  • What speeds does it support? Up to 921,600 baud per port on all channels, enabling fast serial communication for demanding applications.
  • Which operating systems are supported? Windows 32-bit and Windows 64-bit; drivers are included for quick setup and reliable operation.
  • Does it require external power? No external power is required; the device is powered via USB.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 23218605786

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 29 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 4
Good enough
Color: Black
Comfortable chair. Easy to put together. Allen nuts aren't cut perfectly so sometimes hard to get the wrench in there. My biggest complaint, and I didn't even realize this until I sat down in it, the arm rests are not adjustable and they are a little short for my liking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
D
Verified Purchase
DEVON
West Palm Beach, US
★★★★★ 5
COMFY CHAIR GOOD SUPPORT
Color: Dark Brown
So I needed an office chair because the one that I had wasn't really helping my back any. And it just didn't have enough cushion on the chair because when you want to sit for hours at your desk you want to be comfortable. So I took a chance on buying this chair. I thought the color was good and the price was right but I was still a little nervous because it said put together. So I got it right away only took 3 days. And the directions for pretty easy there were a couple of spots that I think we're out of order because you had to kind of play around with the screws going into the holes from the arms but I think if I were to get another chair like this I would probably do it my way because it's pretty self-explanatory but I followed the directions that came with the chair. And hey I'm 65 years old and I put this chair together. It's nice it's sleek and oh my God is it comfortable!!! Right where my lower back and sciatic is I get the support and it just feels good and I know that if I have to be at my desk for 3 or 4 hours I'm going to be comfortable. I highly highly recommend getting this chair. The only issue that I had was the driver did not leave it on my porch. I had ordered a Vizio TV a couple months ago and the driver brought it up to my porch. So I just had to go out and take two steps bring it into the house I really appreciated that. This driver didn't even come through the gate and there is no signs of any dogs because there aren't any. So this driver just left this giant heavy box it was about 35 lb in front of the garage where it was very visible from the road. And I had a dragon to my front door it was heavy I did not like that at all. But it wasn't damaged or anything and I do love the chair. I just don't like what the driver did.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025
A
Verified Purchase
Aya
Birmingham, US
★★★★★ 5
Great sturdy chair and beautiful color
Color: White
I love this chair. I bought it for my home office. It is beautiful, sturdy and very comfortable. I'm not good at all with assembling even basic things but I would say that this was relatively pretty simple for someone like me to put together. Good price and good product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
O
Verified Purchase
OKCity
Waukegan, US
★★★★★ 4
Reliable, Comfortable, and Good-Looking Chair — I Keep Coming Back to It
Color: White
This is my fourth time purchasing this Amazon Basics mid-back office chair, which says a lot about its overall value. It looks clean and modern, fits well in a home office, and is genuinely comfortable for daily use. I typically get about a year and a half out of each one, which feels reasonable given the price point and materials. Out of the box, the chair is easy to assemble and immediately comfortable. The padding is supportive, the armrests are well positioned, and the faux leather gives it a more upscale appearance than many chairs in this category. It rolls smoothly, swivels easily, and works well for long computer sessions without causing back or shoulder fatigue. That said, this is not a lifetime chair. After extended use, the cushioning and structure do begin to wear, and that’s usually when I replace it. Still, considering the comfort, appearance, and cost, it remains one of the best value office chairs I’ve found — which is why I keep buying it again. Pros: • Comfortable padding and good mid-back support • Clean, modern appearance that looks great in an office • Smooth rolling and stable base • Easy assembly • Excellent value for the price Cons: • Durability is moderate; expect replacement after about 1½ years • Not designed for long-term heavy-duty use Verdict: If you want a comfortable, attractive, and affordable office chair that performs well for daily use, this is a strong choice. It may not last forever, but its comfort and value make it easy to recommend — and easy to repurchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
D
Verified Purchase
Debbie Segrest
Lexington, US
★★★★★ 5
Highly recommend
Color: Black
Very sturdy, the cushions make it super comfortable. The size and ease of movement are perfect. Assembly was super easy. A very quiet chair. Wonderful all around value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026

recommand products