Daisy
Last Updated: Jul 30, 2026
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| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
1 USB port to Dual RS-232 Serial Ports
Supports full RS232 Handshaking
Baud rates up to 921,600bps
No power supply needed
OS Compatibility:Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
MULTI-USE FUNCTIONALITY - Quad Port Serial Adapter with FT4232 FTDI Chipset, that supports an automatic handshake allows for digital signage to connecting point of sales systems and barcode scanners.
EASY INSTALLATION - This serial adapter lets you enjoy simple installation and operation with COM port retention that provides robust serial connectivity for legacy devices. With no power supply needed, easy plug and play USB interface options.
COMPATABILITY - With support on multiple OS platforms this makes ours very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
OS Compatibility:Windows 7, 8, 10, and 11 as well as Linux and Mac OS 10.X
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
CONNECTIVITY – This USB to RS-485/ RS-422 serial converter with LED for RX, TX, and Power. Allows for a full range of testing for this device.
UNIQUE CIRCUIT - The converter contains a unique I/O circuit with an internal zero delay. The auto transceiver within controls the data stream automatically without any handshaking signals such as RTS, DTR, etc.
SUPER COMPACT DESIGN - The USA-422485 is a small, compact converter that handles big communication jobs in converting RS 485 to RS 422.
NO ACCIDENTIAL DISCCONECTS - Make your connections safe, simple, and secure with screw down terminals on our RS422/485 adapter. Just strip your wires, insert, and tighten it down
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
USB TO RS232 SERIAL – 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB
EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.
COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8, 10, and 11 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
Os compatibility: Windows 7, 8, 10, and Windows 11 as well as Linux and MacOS 10.X
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
CONNECTIVITY – 3 ft. blue USB to RS-232 serial converter cable with clear USB jacket. Works by connecting the USB Type-A port into the host computer, and then connecting the RS-232 DB-9 male end to the female serial port.
LED INDICATORS - LED activity indicators for Power, TX and RX serial signals. The LED’s allow a visual indication of the signal activity as TX and RX RS-232 signals are communicating.
CHIPSET- FTDI Chipset Inside: FT232RL and Ultra Fast 920K ZyWyn ZT232E for superior operation in serial communication.
COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
USB TO RS232 SERIAL – 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB
EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.
COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
RS-232 - DB9 / M Data rate : Over 1000kbps
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
USB 2.0 TO RS232 SERIAL – 3ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB
EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.
FEATURES - Supports reversible USB type-C connection only, can not be connected to any other USB port. ESD Protection for RS-232 I/O’ +-15KV RS-232 for DTE Mode. PDA RS-232 Port support 56K Modem support Serial Mouse support+ Serial PC camera support.
COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
Hi-Speed USB Serial Adapter, PC, MAC, supports Cisco Break Sequence
No power supply needed, plug and play
RS232 output power: -5.7 to +5.7VDC
Built-in static and surge protection up to 600W
Supported by Win98, Me, XP, 2000, 2003, CE, Vista, 7, 8, 10
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Usbgear | 9.84 | ✅ | ✅ | ✅ |
USB TO RS232 SERIAL – 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB
EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.
COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
OS compatibility: windows 98, XP, 7, 8 and windows 11 as well as Linux and Mac OS 10.X
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Gearmo | 9 |
We've carried out a comprehensive analysis of 1,727 reviews on usb to usb adapters, using our selection criteria to identify the best options in the computers & accessories. Our findings reveal that most customers typically select usb to usb adapters priced around $24.32, with top brands including syntech, dtech, duttek, amazon basics, posdou, xiwxi, anker, hiebee and nimaso and temdan
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