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Serial Adapters - Offering a wide variety of USB to Serial Adapters, USB CAN, and IO Cards providing up to 32 ports

4-Port USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & FTDI Chipset

Protocol

Port COunt

4 Port Serial Adapters

4 port USB 2.0 to Serial Industrial Adapter for business or rugged industrial use with mounting options for stability while in operation. We offer many different styles and form factors to support any serial application.

RS-232 | 384 Bytes Receive | 128 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with optional mountable flanges, the serial adapter…

Model# USB2-4COM-M

$109.95

In stock

RS232 to Ethernet The Industrial 4-Port RS-232 to Ethernet Data Gateway adapter addresses the need to connect individual RS-232C devices to an IP-based Ethernet LAN.…

Model# MSD-SRF4X

$219.95

Not in stock - Backorder allowed

RS-232 | 512 Bytes Receive | 512 Bytes Transmit Superior Build Quality: Housed in a rugged steel chassis with built in mountable flanges, the serial adapter…

Model# CM-41042

$269.95

In stock

USB to RS232 Adapter - DB9 Male Ports The USBG-BAY4 is a 4 port DB-9 RS232 to USB serial adapter that is designed for PC,…

Model# USBG-BAY4

$139.95

In stock

RS-232 | 128 Bytes Receive | 384 Bytes Transmit | FTDI Expand Your Serial Capabilities: Connect 4 legacy 9-pin serial devices through a USB-A port…

Model# USB-4COM

$109.95

In stock

RS485 to USB Adapter Auto Transmit A 4-Port RS-422, RS-485 adapter for serial communication that utilizes four external DIP switches for easy access to the signal…

Model# USB-4COMi-M

$197.95

In stock

Out of stock
USB to RS232 Adapter The USB-4X-RS232 USB to serial converter is designed for PC, thin client, or server to provide instant COM ports expansion via…

Model# USB-4XRS232

$97.95

Out of Stock

USB to RS232 Serial Adapter USB 2.0 Serial Adapter with Optical isolation and surge protection is available on each serial port and is individually optically…

Model# USB2-4COM-SI-M

$274.95

Not in stock - Backorder allowed

Out of stock
USB to RS232 Industrial Serial Adapter Compact Industrial RS232 Serial Adapter bringing 4 DB9 RS232 Ports from one simple connection. Helps expand your system COM…

Model# USB2-4COM-M-CBL

$109.95

Out of Stock

USB to Serial Adapter for RS422 and RS485 Applications The USB-4COMi-SI-M is a USB to Quad RS-422 485 Optical isolated serial adapter and is designed for…

Model# USB-4COMi-SI-M

$384.95

In stock