Best Usb Type A Serial Adapters in 2026
Daisy
Last Updated: Aug 2, 2026
Daisy
Last Updated: Aug 2, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HiLetgo | 9.87 | ✅ | ✅ | ✅ |
Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane
Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid.
Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g.
The module is mainly used for short-range data wireless transmission,such as Bluetooth wireless data transmission,Industrial remote control, telemetry,Traffic, underground positioning, alarm,Smart home ect.
Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc. Computer and peripheral devices.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DSD TECH Direct | 8.87 | ✅ | ✅ | ✅ |
Bluetooth module HC-05 Master and slave Two in one module. Please note: iOS devices (iPhone) are not supported
Use the CSR BC417 mainstream bluetooth chip, bluetooth V2.0 SPP protocol standards
Module working voltage 3.6 V to 6V
Default rate of 9600,default pin:1234, the user can be set up.click the button into AT MODE
Can be switched via AT commands as master or slave mode , the device can be connected via AT commands specified
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HiLetgo | 9.87 | ✅ | ✅ | ✅ |
The factory setting is slave mode, but you can set this module to master mode so that you might be able to connect to other Bluetooth 2.0 devices.HC-05 Wireless BT Module
HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your Arduino project, and then you can use your android phone to control some gadgets, such as: switch, LED.
Master and Slave 2-IN-1 HC 05 Module:Working Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234
Button: Press the button, the module enter the AT mode. AT commands are executed only in AT mode.
6 PIN Dopunt Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module to your Arduino Board
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DSD TECH Direct | 8.87 | ✅ | ✅ | ✅ |
Bluetooth RS232 Adapter : With this Bluetooth RS232 adapter, you can wirelessly communicate with any RS232 devices on Android smartphones or a Bluetooth enabled computer.
Built-in Industrial Bluetooth 2.0 SPP module driven by the CSR BC417 chip. Compatible with Android phones and Bluetooth enabled computers, but not compatible with any iOS device.
RS232 DB9 Interface: Please note that only Rx and Tx signals are valid. Does not support CTS, RTS hardware flow control.
Bluetooth pairing PIN: 1234, Baud rate parameters: 9600, N, 8, 1. Transmission distance of more than 20 meters.Baud rate and Bluetooth name and PIN can be configured by software. DSD TECH provides setup software for free.
About WARRANTY: DSD TECH offers a one-year warranty and lifetime technical support. If you meet any question, please contact us, we will fix your issue within 24 hours.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HiLetgo | 9.87 | ✅ | ✅ | ✅ |
433Mhz SI4438 1000M HC-12 Replace Bluetooth Antenna
Power supply voltage : 3.3V
Default communication distance: about 1000 meters
Default idle current: 16 ma
Module size: 27.8mm*14.4mm*4mm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DSD TECH Direct | 8.87 | ✅ | ✅ | ✅ |
HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your DIY project, and then you can use your android phone to control some gadgets, such as: switch, LED.
Master and Slave 2-IN-1 HC 05 Module:Working Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234
Button: Press the button, the module enter the AT mode. AT commands are executed only in AT mode.
6 PIN Dupont Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module.
Why choose DSD TECH brand: you not only get high-quality products, you can also get technical support and ONE YEAR WARRANTY. You can ask any questions about this HC05 module, our technical team is waiting for you.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Dsd Tech | 3 |
| Hiletgo | 3 |
We've carried out a comprehensive analysis of 1,433 reviews on serial adapters, using our selection criteria to identify the best options in the computers & accessories. Our findings reveal that most customers typically select serial adapters priced around $10.89, with top brands including oikwan, kingdee inc, warmstor, dtech, startech, benfei, dsd tech, sabrent and godshark and top-longer
Our team of expert editors reviewed these high-quality items and handpicked the top 6 serial adapters for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the computers & accessories category. These include oikwan, kingdee industrial co.,ltd, warmstor, dtech co.,ltd, amazon.com, benfeidirect, dsd tech direct, store4pc and aflatroad and top-longer .
We are dedicated to assisting our users in finding the right adapters Products based on their needs, saving them considerable time when choosing which serial adapters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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