SystemBase Multi-4U Combo
USB | Serial

  • Interface: RS422, RS485, USB

USB to 4X RS422/ RS485 ports

4 RS422/ RS485 ports per board. USB full speed compatible. Operates by bus power.

What's included

  • 1 x Main unit
  • 1 x Software CD
  • 1 x Manual

SystemBase Multi-4U Combo
USB | Serial

  • Interface: RS422, RS485, USB

art : Multi-4U/Combo
€ 219 excl. VAT
€ 274 incl. VAT

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More information


BusUSB 1.1 and 2.0 compliant
InterfaceRS422/ RS485
No. of Ports4 x DB9 female
Speed300 bps to 921.6 Kbps
Protection15KV ESD Protection for all signals
Data Bits5, 6, 7, 8
Stop Bits1, 1.5, 2
ParityNone, Even, Odd, Space, Mark
Dimensions (mm)135 x 26 x 84
ApprovalsMIC, CE, FCC, RoHS Compliant

Product information

OverviewMulti-4/USB Series enables the connection of up to 4 asynchronous serial devices such as terminals, modems, printers, and scanners to make a PC an economical but a powerful multi-user and multi-device system. TXD and RXD LEDs are included in the product for the displays of data transmission.

Another remarkable feature is the conversion of the RI pin(pin #9) connector into a power of external power adapter, providing power to the external devices as needed. This feature can be fully exploited when connecting small peripherals such as cash registers, barcode readers, or receipt printers to systems like PC POS.
  • 4 RS422/ RS485 ports per board
  • RS232 serial interfaces
  • Serial communication speed of up to 921.6Kbps
  • USB 2.0 full speed (12M bits/second) compatible
  • No external power required
  • On-chip control for RS422/485 auto toggling
  • Built in 15KV ESD protection
  • Easy maintenance with TX/RX LED display
  • Windows 98/CE/2000/XP/Vista/2008/7, Linux Kernel 2.4 or greater, Mac OS X, Mac OS9, Mac OS 8.6 driver support

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