Shipping Information

The shipping process is fully robotic and orders are normally pulled and shipped quickly in 7 different warehouses across the US and then dropped in sealed USPS, UPS and FedEx containers for pick-up on the next business day. High volume or backordered items may have additional shipping delays. Once pulled, orders cannot be stopped, however you can return orders for refund unopened if you have changed your mind. Tracking normally is sent / updated within 48 hours of pick-up. Delivery is normally 3-10 business days after leaving the warehouse, however carrier delays may occur. Shipping may take longer in rural areas, due to carrier delay, weather or acts of God. Weekends and Holidays do not count as business days and have no pickup, movement or delivery.

Covid 19 Update — We have seen slowdowns and backlogs in package pickup, sorting, scanning and delivery by UPS, Fedex and USPS caused by worker shortages and facilities disruption due to the Covid 19 Pandemic. Some UPS and USPS hubs are no longer scanning all packages, as a result some tracking will show nothing until delivery.

USB To Serial 1 Port RS-232 DB9 Male USB Converter

Sold Out

USB To Serial 1 Port RS-232 DB9 Male USB Converter MFG: Advantech B+B SmartWorx
UPC: 835788108552

* ground shipping normally takes 3-10 business days, depending on destination

Click here to view our Return Policy
Click here to view our full Terms of Sale


These compact USB to Asynchronous Serial RS-232 and RS-485 mini-converters allow you to add a serial port to your USB only PC. They are perfect connecting to a remote device to gather data or upload a program. USB 2.0 compatibility makes installing them on your PC easy. Versions are available with DB9 connectors and Terminal Blocks for quick wiring. We support RS-232, RS-485 (2-Wire) and RS-485 (4-Wire) protocols. Need 5 Volt and 3.3 Volt TTL? We even have a converter for that. Our driver software supports operating systems up to Windows 7 with 32 and 64 bit support.

Tech Specs

Manufacturer Advantech Co., Ltd
Manufacturer Part Number 232USB9M
Manufacturer Website Address http://www.advantech.com
Brand Name B+B SmartWorx
Product Model 232USB9M
Product Name USB to Serial Mini-Converters - For the Technician on the go
Packaged Quantity 1
Product Type Data Transfer Adapter
Technical Information:
Adapter TypeSerial/USB
Connector Type on First EndUSB 2.0 Type B - Male
Connector on First End Details1 x Type B USB 2.0 USB Male
Connector Type on Second EndDB-9 RS-232 Serial - Male
Connector on Second End Details1 x 9-pin DB-9 RS-232 Serial Male
Physical Characteristics:
Product MaterialPlastic
Weight (Approximate)5.12 oz
Package Contents
  • USB to RS-232 Mini-Converter
  • 3ft (1M) USB Cable
  • Datasheet
  • CD with Drivers for Windows 98, ME, 2000, XP and Vista
Certifications & Standards
  • FCC
  • CE
Environmentally FriendlyYes
Environmental CertificationRoHS
Country of OriginUnited States
Limited WarrantyLifetime

Add To Cart To See Price

The "Add to Cart to See Price" message indicates an additional discount is in effect, and this discount is calculated in the Shopping Cart.

You can see this price by adding this item to your shopping cart.

Please be assured that simply adding an item to your cart does not obligate you to buy it--you can always delete the item from your cart if you decide not to purchase it.