NPort 6650-8


NPort 6650-8 - 8 Port RS-232/422/485 Rack-mount Ethernet Secure Serial Device Server
CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.
This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.
Underwriters Laboratories (UL) is an independent product safety certification organisation based in the United States. UL develops standards for products, materials, components, assemblies, tool and equipment, mainly dealing with product safety.
These devices and systems have been designed to accept a wide voltage DC power input. This feature is desirable in the industrial market where a fixed voltage level or mains AC power cannot be guaranteed.
The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.
These products come with a standard five year manufacturer warranty.
NPort 6650-8 Ethernet Serial Device Server
NPort 6650-8NPort 6600-8
Featured in:Moxa NPort Serial Device Servers
4 NPort 6650-8 versions available
Free delivery to UK mainland addresses

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Operating temperature
Version information
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NPort 6650-8
NPort 6650-8 with 100V to 240V AC power (0°C to +55°C)
1 in stock
Next day
NPort 6650-8-48V
NPort 6650-8 with ±48V DC power (0°C to +55°C)
NPort 6650-8-T
NPort 6650-8 with 100V to 240V AC power (-40°C to +75°C)
NPort 6650-8-HV-T
NPort 6650-8 with 88V to 300V DC power (-40°C to +85°C)
Peripheral information
Lead time*
1 off price**
Request Qty Pricing**
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8-pin RJ45 to DB9 male Cable, Length 150cm
20 in stock
8-pin RJ45 to DB25 Female Cable (150mm)
8-pin RJ45 to DB9 Female Cable (150mm)
8-pin RJ45 to DB25 Male Cable, Length 150cm
RJ45 to DB25 Female serial shielded cable, 150cm length
RJ45 to DB9 Female Serial Shielded Cable, 150cm length
RJ45 to DB25 male serial shielded cable, 150cm length
RJ45 to DB9 male serial shielded cable, 150cm length
1-port 100BaseFX Expansion Module with Multi Mode and SC Connector
1-port 100BaseFX Expansion Module with Multi Mode and SC Connector (-40°C to +75°C)
1-port 100BaseFX Expansion Module with Single Mode and SC Connector
1-port 100BaseFX Expansion Module with Single Mode and SC Connector (-40°C to +75°C)
2-port 100BaseFX Expansion Module with Multi Mode and SC Connector
2-port 100BaseFX Expansion Module with Multi Mode and SC Connector (-40°C to +75°C)
2-port 100BaseFX Expansion Module with Single Mode and SC Connector
2-port 100BaseFX Expansion Module with Single Mode and SC Connector (-40°C to +75°C)
1x PSTN Modem Port with RJ11 Connector (-40°C to +75°C)
1-port 10/100BaseTX Expansion Module
1-port 10/100BaseTX Expansion Module (-40°C to +75°C)
2-port 10/100BaseTX Expansion Module
2-port 10/100BaseTX Expansion Module (-40°C to +75°C)
Rack-mounting Kit, 2 L-shaped plates, 8 screws, 44 x 57.5 x 1.6 mm
All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the NPort 6650-8 to UK Mainland on orders over £50 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)

NPort 6650-8 overview

  • 8x RS-232/422/485 ports with RJ45 connectors for high-density environments
  • ISA99 / IEC 62443-4-2 compliant
  • Non-standard baudrates supported with high precision
  • Port buffers for storing serial data when the Ethernet is offline
  • Supports IPv6
  • Ethernet redundancy (STP/RSTP/Turbo Ring) with network module
  • Modular design for scalability
  • DES/3DES/AES for highly secure data transmissions  
  • Universal high-voltage ranges: 100V to 240V AC or 88V to 300V DC
  • Popular low-voltage ranges: ±48V DC (20V to 72V DC, -20V to -72V DC)
  • Wide operating temperature (on -T versions
The NPort 6600 series of secure device servers is the right choice for applications that use large numbers of serial devices packed into a small space. Security breaches are intolerable and the NPort 6600 ensures data transmission integrity with support of DES, 3DES, and AES encryption algorithms.

Serial devices of any type can be connected to the NPort 6600, and each serial port on the NPort can be configured independently for RS-232, RS-422, or RS-485 transmission.

The NPort 6600 has a built-in LCD panel for configuration. The panel displays the server name, serial number, and IP address, and any of the device server’s configuration parameters, such as IP address, netmask, and gateway address, can be updated easily and quickly.

The NPort 6600 provides adjustable termination, pull high, and pull low resistors for RS-485 communication. In some critical environments, termination resistors may be needed to prevent the reflection of serial signals, and the pull high and pull low resistors may need adjusting to maintain the integrity of the electrical signal.

Since no set of resistor values works for every environment, the NPort 6600 allows manual adjustment of the resistor values for each serial port using built-in DIP switches.

For more information about the NPort 6650-8 please contact our technical sales team on +44 (0)1782 337 800 or alternatively submit an enquiry
Enquire about the NPort 6650-8
Need more info or project pricing for the NPort 6650-8?
T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK
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