
UTN408 USB to 4-Port RS-232
Product Introduction
Product QA
File Download
Product Specifications
- Chipset: Prolific PL-2303
- Solves the issue of newer computers and laptops lacking traditional RS-232 interfaces.
- Provides 4 RS-232 ports (D-sub 9-pin male/male connectors).
- Supports USB 1.1 specification (backward compatible with USB 2.0/3.0).
- RS-232 ports support data transfer rates up to 1Mbps.
- Supports hot-swappable devices and bi-directional data transmission.
- Supports remote wake-up and power management.
- Powered via USB, no external power adapter required.
- Applications: Digital cameras, modems, ISDN-TA, barcode scanners, industrial testing instruments, Palm III/V, graphics tablets, POS (point-of-sale) systems, fingerprint recognition, security systems, and more.
Product Application

System Requirements
- One Available USB Port
- Operating System: Windows2000/Server2003/Server2008/Server2012/XP/VISTA/7/8.x/10/11
MAC 8.6/9.x/10.x
LinuxRedhat 7.3/8/9
Product List

UTN408 Unit x 1

Product warranty card x1
※The product specifications and accessories mentioned in the user manual are for reference only. Any changes will not be notified in advance. UPMOST reserves the right to modify product design, accessories, and drivers.
Q&A
How to Resolve the "This PL2303 Driver Does Not Support Windows 11 and Later Versions. Please Install the Correct Driver" Message After Updating Windows 11?
1. Click the Windows [Start] button, type [Device Manager], and press Enter.
2. Next, in Device Manager, locate the device showing the message "This PL2303 driver does not support Windows 11 and later versions, please install the correct driver."
3.Right-click on the device and select [Uninstall device].
4.Check the box for [Delete the driver software for this device], then click [Uninstall].
5. Finally, unplug and reconnect the device, and it should work properly.
※ If the issue persists after following the above steps, please restart your computer after [Uninstalling the device], and it should work properly.
※ In the future, if you update Windows 11 and the same message appears, simply repeat the above steps to resolve the issue.
File Download
Date
Type
Operating System
Description
File Download
Details
Details
Linux 2.6 Kernel
Mac OS 9
Mac OS 10
Win 2000 SP4
Win XP SP2
Win XP 64-bit
Vista 32-bit
Vista 64-bit
Win 7 32-bit
Win 7 64-bit
Win 8 32-bit
Win 8 64-bit
Win 8.1 32-bit
Win 8.1 64-bit
5.5MB
ZIP
The Windows 10 operating system has a built-in driver, so no additional driver download or installation is required.
Driver version:
Win2K/XP V4.0.100.1190
Win Vista V10.50.0.125
Win7/8/8.1 V14.0.0.162
MacOS 10.4-10.8 V1.0.9b6
MacOS 8/9 V136b1
Linux
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