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Computer Cabling & Networking Solutions @ Everyday Low Prices!

 ITEM: >   CM-41042 > $179.98

4-Port DB-9 RS232 to USB Adapter with Isolation and Surge Protection

Color: Black Size\Length: 1.5x6x9 Part No.CM-41042

CM-41042 for VISTA and Winodws 7 (32/64-bit and 2008SR2

4-x port RS232 to USB Adapter w/ Isolation and Surge Protection

Each serial ports offer data transfer rate up to 920 Kbps for high system performance. Users are able to connect multiple serial devices through one USB port on their system. The converter also supports wake on line and power management functions. It has dual data buffers for upstream and downstream data flow. Our USB to Serial converter is the ideal solution for various industrial communication. Supports Microsoft Windows and Linux.

  • Provides 4 port RS232 Serial Ports over USB Port
  • Provides 4DSUB-9 Connectors
  • Baud Rate from 75 bps to 921.6Kbps
  • 512-Byte Deep FIFOs for each Port
  • Supports 5,6,7,8 Data Bits
  • Odd, Even, Mark, Space, or None parity mode
  • Supports 1, 1.5 and 2 Stop Bits
  • Provides 2,500Vrms Optical Isolation
  • Built-in Bi-direction Surge Protection Circuits
  • Supports USB Bus Power
  • DC Jack for Optional DC 5V Power Input
  • Supports Win98, Me, XP, CE, Win2000, 2003, Vista and Vista 64-bit


The CM-41042 is an Isolation and surge protection 4 Serial RS-232 Ports to USB serial adapter that is designed for PC, thin client, or server to provide instant COM port expansion via the Universal Serial Bus (USB).

The CM-41042 provides the scalability to quickly adapt to new USB technologies. Multiple modules can be added to a single USB interface allowing you to add RS232 connectivity as needed. Complete product line offer many choices help you to expand and make your network grow with your requirements.

With the USB Plug-and-Play feature, simply plug in, follow the instructions of Install Wizard, then you are done. You don't have to deal with Card Slots, I/O address, IRQ jumpers, DMA and others when you are connecting the devices. The System will recognize the device and install the drivers automatically. The CM-41042 is an ideal solution for your expanding applications.


  • USB Port Fully compatible with USB1.0 and USB1.1; Forward compatible with USB2.0
  • Serial Port Supports 4 DB9-Male UART Serial ports, the key benefits are:
  • Data Rate from 75 bps to 921.6Kbps
  • 512-Byte Deep FIFOs for each Port
  • Supports 5,6,7,8 Data Bits
  • Supports 3-wire RS232 Signals (TXD, RXD, GND)
  • Odd, Even, Mark, Space, or None parity mode
  • Supports 1, 1.5 and 2 Stop Bits
  • Supports Isolation and Surge Protection Features

OS Support

  • XP
  • Windows 7
  • Windows 8
  • Windows 10
  • Linux
  • OSX

Power Requirements

  • Normally Power solely from USB Bus, no external power supply needed.
  • A +5V DC Jack Input for supports Power over DB9-Male applications. Form Factor 6.83(L) x 3.83(W) x 1.70(H) (17.35 x 9.72 x 4.32 cm)

More Pictures:   View More Item Images FOR CM-41042 if Available!  
DRIVERS:  GET PRODUCT DRIVERS FOR CM-41042 if Available!   More Spec's:  GET More Specifications FOR CM-41042 if Available!   ITEM FAQ's:  GET PRODUCT MANUAL and/Or PDF FOR CM-41042 if Available!   Video:  View Video File FOR CM-41042 if Available!   Audio:  Listen to Sales-Pitch File FOR CM-41042 if Available!  
Compatibility:  ITEM DESIGNED and Tested with OPERATING SYSTEM
Item Works with MAC Operating System OS 9.1 or Higher        Item Works with Windows XP     
TECH NOTES: Industrial 4-Port DB-9 RS232 to USB Adapter with Isolation and Surge Protection
Manufacturer: CableMAX
Warranty: One Year
In-stock: Yes
PART NO: CM-41042
Size\Length: 1.5x6x9
Color: Black
Our Low Price $179.98    Quantity Discount: 6 + $172.12 12 + $169.14
Quantity:      ITEM AVAILABLE TO SHIP SAME DAY!   We Accept Visa Master Card And American Express as Well as Purchase Orders!
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 CM-41082...Industrial 8-Port DB-9 RS232 to USB Adapter Isolation Surge Protection..$297.91  
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