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B&B Electronics 4-Port USB 2.0 to RS-232/422/485 Serial Adapter

B&B Electronics QSU2-400

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B&B Electronics

Model QSU2-400

UPC Code: 835788104479

Provantage Code:  QTCU00A

Condition:  Factory New

  • Product Type: Serial Hub
  • Limited Warranty: Lifetime
  • Host Interface: USB
  • Data Transfer Rate: Up to 921.60 kbit/s Serial Port
  • Product Model: QSU2-400

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B&B Electronics QSU2-400 Specifications

    4-Port USB 2.0 to RS-232/422/485 Serial Adapter


    If speed, expansion and support are what youre looking for in a USB Serial Adapter, think Quatech.

    You can now broaden the range of external peripherals used on your computer at higher speed rates than the USB 1.1 series, with the introduction of the High speed USB 2.0 Serial Adapters. The USB 2.0 has more bandwidth that allows higher data rates on the serial ports for more efficiency.

    The new High speed USB 2.0 Serial Adapter line gives your laptop or workstation the ability to communicate between a USB (Universal Serial Bus) port and up to eight RS-232, RS-422, or RS-485 serial peripherals. It adds the COM port(s) via its USB connection and is compatible with new and legacy RS-232 or RS-232/422/485 devices. The USB 2.0 Serial Adapters are the ideal solution for a variety of industries and applications including banking, retail and industrial automation where PCs have a significantly shorter lifecycle than the peripherals that use them.

    For over 20 years, Quatech has been known to help you Connect with Reliability. As we continue in the race to become the industry leader, our high performance device connectivity line expands with the new high speed USB 2.0 Serial Adapters. It enables the USB Serial Adapter to hit speeds of up to 921.6 kbps, 1024-byte FIFO and hardware and software flow control.

    Quatech USB Serial Adapters enumerate themselves as standard COM ports that are compatible with all standard RS-232 or RS-232/422/485 devices and software created for them. With the industrial surge suppression IND option, you can safeguard the USB Serial Adapter. The IND option is ideal for implementing USB-to-serial networks in factories, power plants and other potentially harsh industrial environments. USB 2.0 is fully compatible with USB 1.1 devices. The older devices work with the new bus, and vice versa.

    The 400 Series models introduce the software-selectable Multi-Electrical Interface. The MEI capability is available on all ports at the click of a mouse. LEDs visually tell you which ports are using which protocol, so go ahead, mix and match.


    Connect serial devices to your USB-only PCs

    With panel mount USB connectors you boost speed and broaden the range of external peripherals used on your computer. Ideal for a variety of industries and applications including banking, retail and industrial automation.

    • Use legacy serial devices with USB PCs and laptops
    • Connect multiple devices with multi-port models

    View and compare our panel mount USB connectors below. Click on each model to view a photo and see the Details, Specs, Downloads, and Accessories tabs for further information.


General Information
Product Name4-Port USB 2.0 to RS-232/422/485 Serial Adapter
Product ModelQSU2-400
Product TypeSerial Hub
Technical Information
Host InterfaceUSB
Platform SupportedPC
Physical Characteristics
Form FactorExternal
Limited WarrantyLifetime
Country of OriginUnited States
Other Information
Data Transfer RateUp to 921.60 kbit/s Serial Port
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B&B Electronics Model QSU2-400