Isolated Ethernet Serial Server with 2 RJ45 Ethernet Ports and 1 RS-232/422/485 Serial Port

PART #  523865
Minimum 1 EACH
Call for Availability


Multiple fiber optic options make integration into any existing network quick and easy. Choose from Multimode LC and Single-mode LC.
VESR321 series servers also feature an additional copper pass-through RJ45 port that functions like an unmanaged switch, allowing you to connect another Ethernet device or PC work-station. Heartbeat connectivity keeps the serial server on-line. If connectivity is lost it attempts to reconnect every five seconds until a connection is regained. A manual reboot is not required when communications are restored.


Easy to use Vlinx(TM) Manager software puts access to your whole shop right on your desktop. Configure your serial devices, upgrade firmware and monitor activity from a single location. The data ports are isolated from one another and also from the power supply.


  • Three-way, 2 kV isolation
  • Ethernet enable serial devices
  • Direct IP, virtual COM port, or paired mode
  • Ethernet pass-through port available
  • Ethernet fiber options
  • Serial RS-232/422/485 port
  • NEMA TS2 (VESR321)


UNSPSC Code 43222605

Spec Sheet

Spec Sheet

Shipping and Fulfillment Policy

When you order products from Anixter.com, the order is processed within one to two business days. Orders received during non-business days are processed on the next business day.

You have several shipping options for parcel shipping: standard ground 5 to 7 business days, 2 to 3 business days, or next business day.

Anixter.com orders ship to addresses within the United States. Anixter.com orders do not currently ship to addresses outside the United States or military/government APO/FPO locations. We are also not able to ship to Post Office Box addresses. If you wish to ship to an address outside the United States or a military/government location, please contact your local Anixter sales representative to discuss your options.

In addition, Anixter.com offers Less-Than-A-Truckload “LTL” option for products that cannot be shipped via parcel shipping. For products that will be shipped via LTL, you will be provided with a set of Accessorials to select from to provide Anixter with additional shipping considerations, such as residential delivery, inside delivery, liftgate or limited access.

  • Residential Delivery - A residential delivery charge applies to shipments to a home or private residence, including locations where a business is operated from a home, or to any shipment in which the shipper has designated the delivery address as a residence.
  • Inside Delivery - When requested, freight carrier unloads shipments from or to areas that are not next to the trailer, such as shopping malls or office buildings. An elevator must be available to provide service to floors above or below the trailer.
  • Liftgate - Freight carrier provides liftgate service, if needed, to load and unload a shipment when loading/unloading docks are not available.
  • Limited Access Locations - A limited access location is a site where pickup or delivery is restricted or limited.

Shipping charges are calculated based on the shipping option you select, and is prepaid by you at the time of shipment.