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Bridge Your Legacy Devices to Modern USB
The TECHTOO 4-Port USB to RS232 DB9 Serial Adapter bridges the gap between modern USB ports and older serial devices. It allows you to connect up to four RS-232 serial devices, such as modems, GPS receivers, routers, and printers, to your computer. This adapter is powered directly by the USB port, eliminating the need for an external power adapter, and offers plug-and-play functionality after initial driver installation.
Equipped with a high-performance FTDI chipset, this adapter ensures reliable data transfer speeds of up to 1Mbps. It supports automatic handshake and maintains COM port assignments across reboots, crucial for industrial control systems and point-of-sale devices. The adapter is compatible with a wide range of operating systems, including Windows (up to 10), macOS (10.X/11.X), and Linux, making it versatile for various computing environments.
This adapter is ideal for connecting legacy equipment that still relies on RS-232 ports, such as Cisco serial consoles, specific printers, or industrial instruments. While it offers robust connectivity for many devices, it does not support serial mice requiring IRQ or I/O addresses. Ensure your target device uses a standard DB9 male connector and requires RS-232 communication.
Seamless Legacy Device Integration
This TECHTOO adapter bridges modern USB ports with essential legacy serial devices. Its FTDI chipset ensures broad compatibility with Windows, macOS, and Linux, supporting up to 1Mbps data transfer. Powered by USB, it offers plug-and-play convenience after driver installation. It's designed for reliable connectivity with modems, GPS units, industrial equipment, and POS systems, maintaining COM port assignments across reboots for uninterrupted operation.
Who It's For vs. Who Should Skip It
Ideal for IT professionals, engineers, and hobbyists needing to connect multiple legacy serial devices like routers, industrial controllers, or specific printers to a modern computer. Skip this adapter if your device requires an IRQ number or I/O address, such as some older serial mice, or if your device uses a different serial connector type (e.g., DB25).
Typical situations where TECHTOO 4-Port USB to RS232 DB9 Serial Adapter Cable Male-to-Male with FTDI Chip | Connects 4 Serial Devices helps — illustrative scenarios, not customer reviews.
Connecting legacy industrial equipment in a factory setting.
This 4-port adapter allows seamless integration of older machinery with modern PCs, ensuring reliable data logging and control without needing to replace functional equipment. FTDI chipset guarantees stability.
Setting up a point-of-sale system with multiple serial peripherals.
Connect cash drawers, receipt printers, and barcode scanners to a single USB port on a POS terminal. COM port retention ensures consistent device recognition for smooth transactions.
| Supported Operating Systems | Windows 8.1/8/7/Vista/XP/2000, Android, Mac OS X 10.6+, Linux |
| Power Source | USB Port |
| Automatic Handshake | Supported |
| COM Port Retention | Yes |
| Plug and Play | Yes (after driver installation) |
| Maximum Baud Rate | 1 Mbps |
CrowCrowCrow helps you bring this product to India. Any warranty is offered by TECHTOOunder its own policy.
| Feature | TECHTOO 4-Port USB | Others |
|---|---|---|
| Chipset Reliability | Genuine FTDI chipset ensures broad OS compatibility and stable 1Mbps transfer speeds. | Local adapters may use generic or unbranded chipsets, leading to driver issues or lower transfer rates. |
| Port Count | Four RS232 DB9 male ports for connecting multiple legacy devices simultaneously. | Most local adapters offer only one or two serial ports, requiring multiple units for similar connectivity. |
| Driver Support & Stability | Microsoft-signed drivers and FTDI chipset provide robust, plug-and-play performance across Windows, macOS, and Linux. | Driver support for local adapters can be inconsistent, especially on newer OS versions, often requiring manual installation and troubleshooting. |
| Build Quality | Durable iron construction with thumbscrews for secure connections, designed for industrial environments. | Local adapters may use lighter plastic casings and lack secure locking mechanisms, potentially leading to connection failures. |
| Cost per Port | Connect 4 ports with ₹1,538 per port — reliable performance for critical applications. | Local single-port adapters can range from ₹1,000-₹2,500; multiple units would exceed the cost of this 4-port solution. |
| SKU | mrc3198 |
| GTIN | 0713458103734 |
| Brand | TECHTOO |
| Model Name | USB to Serial RS232 Adapter |
| Part Number | STKC-USB2-RS232-4PSCREW |
| Color | 4 RS232 Port |
| Material | Iron |
| Connector Gender | Male-to-Male |
| Number of Pins | 9 |
| Cable Length | 0.91 m (3 ft) |
| Item Weight | 0.15 kg |
| Item Dimensions | 23 cm x 16.5 cm x 2.8 cm (L x W x H) |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
About TECHTOO
TECHTOO specializes in reliable connectivity solutions, offering a range of adapters and cables designed for broad compatibility and performance.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
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This item:
TECHTOO 4-Port USB to RS232 DB9 Serial Adapter Cable Male-to-Male with FTDI Chip | Connects 4 Serial Devices
6,150
This item
TECHTOO 4-Port USB to RS232 DB9 Serial Adapter Cable Male-to-Male with FTDI Chip | Connects 4 Serial Devices
6,150
Total price:
23,570
You save 5,930 (20%) Extra3 items selected
3 items
23,570You save 5,930 (20%) Extra
| Attributes | Current |  |  |  |  |  | |
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 6,150 6,760 | 2,620 3,620 | 14,800 19,120 | 5,570 7,150 | 5,770 9,660 | 3,690 5,710 | 6,180 6,790 |
| Rating | 4.30(35) | 4.80(900) | 4.30(35) | 4.00(48) | 5.00(3) | 5.00(1) | 4.00(48) |
| Brand Name | TECHTOO | DSD TECH | TECHTOO | TECHTOO | TECHTOO | TRENDnet | TECHTOO |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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