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USB to Isolated RS-422/485/530 Serial Interface Adapter (1 Port): ELK-USB2104
Configurable as RS-422, RS-485, or RS-530
Optical isolation provides protection against transients and group loops
High speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
Data rates to 921.6K bps
Automatic RS-485 enable/disable
Hot-swappable
Powered by USB connection
Total length 72”
DB-25M connector
The ELK-USB2104 serial interface adapter provides one isolated RS-422 or RS-485 serial port for control and automation applications. Isolation helps to prevent damage caused by ground loops and surges. Power for the ELK-USB2104 is obtained directly from the USB cable, eliminating the need for wall power. The USB software drivers and utilities make installation and operation easy using Windows 98SE, ME, 2000, XP and Vista operating systems. After installing the software, simply connect the ELK-USB2104K serial interface adapter to your USB port and the device is immediately recognized by the system as a standard COM port.
Number of ports 1
Communications chip USB/UART
Max. data rate 921K bps
Max. data distance

Up to 4000 ft.
USB Specification 1.1 Compliant, 2.0 Compatible
Power Requirement +5V @ 100mA
Dimensions 3.8" (L) x 2.3" (W) x 1.0" (H)
Operating Temperature 0 - +70°C
Storage temperature -50 - +105°C
Humidty range 10 - 90% R.H.
ELK-USB2104
 USB to Isolated RS-422, RS-485, RS-530 DB25 Serial Interface Adapter
ELK-CA104 DB25 Male to DB25 Female 72" in Length
ELK-DB104
Converts RS-530/422 DB25 Male Connector to an Opto 22 Optomux Compatible DB9 Female Connector
ELK-HUB4 High Speed USB 2.0 4-Port Hub
ELK-HUB7 High Speed USB 2.0 7-Port Hub
ELK-KT104 Terminal Block Kit - ELK-TB04-KT + ELK-CA104 Cable
ELK-TB04-KT Terminal Block Kit - DB25 Female to 25 Screw Terminals, 6" Snap Track & DIN-Rail Mounting Clips
ELK-RJ25S8 DB25 Female to RJ45 Modular Adapter
All specifications within this document are subject to change without notice.