UGREEN USB to RS232 DB9 Cable 3m
Product description
At a glance
The UGREEN USB to RS232 DB9 cable is a 3 metre USB to serial adapter that links modern PCs and laptops to legacy RS232 devices such as routers, switches and telescope controllers. It delivers a straightforward wired connection with a PL2303 chipset and is powered from the host USB port, so no separate power supply is needed. If you need a reliable serial link for configuration or device control, this cable covers the basics with minimal fuss and clear compatibility notes.

Tech specs


- Name: UGREEN USB Serial Cable USB to RS232 DB9 9 pin Converter Cable
- Type: USB to RS232 serial adapter
- Format: USB Type A Male to 9‑pin DB9 RS232
- Length: 3m
- Processor: PL2303 chipset
- Conductor: Tinned copper wire gauge 24 and 28
- Shielding: Triple shielding

Why it’s worth it
This cable keeps things simple, offering plug and play after a one time driver install according to the manufacturer. Triple shielding and tinned copper conductors aim to reduce interference on long runs, which helps when you are configuring network kit or steering a telescope controller at a distance. Note that driver availability can vary by operating system, so check compatibility before purchase.



How to use it
Connect the USB Type A plug to your computer and the DB9 end to the serial device, then install the provided PL2303 driver if required. It works well for console access to Cisco routers and switches, for interfacing with Celestron NexStar hand controllers, and for certain AV control hardware such as Extron and Crestron units. It’s a practical cable for network engineers, hobby astronomers and AV technicians.

What you get
The pack contains a USB 2.0 to Serial 9‑Pin DB9 RS232 converter cable. No external power adapter is included or required, as the cable draws power from the host USB port.
Products with discounts that might interest you
- PlayVital Silicone Grip Skin for PS5 Controller (Anti-Slip) – CyberMech design, white
- BJLBOJEY 4G Kids Smart Watch GPS tracker
- Watch charger station 31 g wireless charging
- CORSAIR RM750e 750W ATX power supply 🔌
- Kids iPad case for 10.2 inch iPad 9th
- Diaclara iPhone 16 6.1" full-body rugged case
- USB Plug 4 Pack UK Adaptor 5V 1A
- Duracell Plus AA 36-pack alkaline batteries 1.5V
- TV Backlight 14.7ft for 55–65in
- Mini Projector 20000 Lux, 4K support
- Tapo S200B Smart Button One-Click Alarm
- Gawfolk 34 inch ultrawide gaming monitor 144Hz
- Google Pixel Watch 4 (45 mm) LTE smartwatch with Actua 360 domed display, Obsidian Active Band and Gemini help
- INIU Slim 22.5W Power Bank 10000mAh
- Lamicall N55 MagSafe Car Charger 15W
- LISEN 2‑pack car charger 54W USB‑C
- Miracase iPhone 14 clear case 6.1-inch
- MUSICOZY Bluetooth Sleep Headphones 16Hrs
- Samsung Fast Charger Plug and Cable 25W
- TP-Link Tapo P110 4-pack smart plug with energy monitoring 🔌
- PlayVital Joystick Caps Happy & Gloomy for Switch
- Head Torch Rechargeable 5200mAh LED headlamp
- Hiwill-Audio 5.1.2CH Soundbar for TV
- TP-Link Tapo P100 Smart Plug with Alexa control 🔌



