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Description
USR N520 2-PORT SERIAL-ETHERNETAn Industrial 2 Port Ethernet Device Server With Bi directional Transparent Transmission Between RS232 RS485 RS422 and Network. 2 Port Ethernet Device Server Specifications System Information Processor Cortex M4 Basic Frequency 120MHz Flash 512K byte Ethernet Port Number 1 Interface Standard RJ45 Rate 10 100 Mbps MDI MDIX, auto switch between cross and direct connection Protection 2KV electromagnetism isolation, shell insulation blocking Network
An Industrial 2 Port Ethernet Device Server With Bi-directional Transparent Transmission Between RS232/RS485/RS422 and Network.
2 Port Ethernet Device Server
Specifications
| System Information | |
| Processor | Cortex-M4 |
| Basic Frequency | 120MHz |
| Flash | 512K byte |
| Ethernet | |
| Port Number | 1 |
| Interface Standard | RJ45 |
| Rate | 10/100 Mbps MDI/MDIX, auto switch between cross and direct connection |
| Protection | 2KV electromagnetism isolation, shell insulation blocking |
| Network Protocol | IP, TCP, UDP, DHCP, DNS, https, ARP, ICMP, Websocket, httpsD Client |
| Receive Buffer | Max 16k bytes buffer |
| Serial | |
| Port Number | 2 (RS232/485/422*2), 2 serial ports can simultaneously work at the different working modes. |
| Interface Standard |
RS-232: TX/RX/RTS/CTS
RS-485: A+/B-
RS422: TX+/TX-/RX+/RX-
|
| Data Bits | 5, 6, 7, 8 |
| Stop Bit | 1, 2 |
| Check Bit | None, Even, Odd, Space, Mark |
| Baud Rate | 600 bps ~ 230K bps |
| Flow Control | RTS/CTS/Xon/Xoff |
| Buffer | Send and receive 2k bytes respectively |
| Protection | ESD protection, anti-surge |
| SocketA | |
| Transparent Transmission Mode | TCP Server/TCP Client/UDP Server/UDP Client |
| Supported Function | Networking printing, Modbus Gateway, USR-Cloud, self-defined registration package, self-defined network and serial heartbeat package |
| SocketB | TCP Client/UDP Client |
| Software | |
| Virtual Serial（USR-VCOM） | Windows 2000 or higher (32 bit/64 bit) |
| Configuration | Built-in webpage, computer set-up software, serial command |
| Basic Parameter | |
| Size | 150 x 79 x 30 mm |
| Operating Temp. | -40 ~ 85°C |
| Storage Temp. | -45 ~ 105°C, 5 ~ 95% RH |
| Input Voltage | DC 5 ~ 36V |
| Working Current |
95mA (aver) @ 5V
45mA (aver) @ 12V
|
| Power | <1W |
| More | |
| Certificate | CE, FCC, ROHS, KCC and WEEE pending |
| Warranty | 2 years |
| Accessory | 12V power supply, serial line, cable, converter |
Downloads
Additional Information
| Device | Server |
| Type | 2 Port | Ethernet | Device |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Use as directed, when needed, and you'll be good to go.
A must have if you have a need for a ZDDP additive. This won't fix your worn valve seats, leaking piston rings, seasonal depression or gout but it will improve the lubricating properties of a quality oil in a properly maintained motor for your longevity goals.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Every oil change for bikes
I use this in my bike every oil change
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Buddy filled diesel skid steer with automotive gas engine oil. Used this to help.
We all know that guy who will buy a $65,000 machine and then only service it once a year with the cheapest oil on the shelf from Rural King or some other place with ultra cheap, home branded, questionably quality oil. Yep. That is my good buddy.
So I go to the shop a couple weeks back and he is re-filling the skid steer engine with some ultra cheap, totally not to spec, gas engine oil. I question him and he states that it is perfect oil for the machine being 5W-30. I ask him if it meets the SAE ratings for the diesel, he repeats back that yep... it is 5W-30. So I go grab his New Holland book (C232 track skid steer) and look up the oil requirements, then I look at this junk oil, and I try to explain to him the SAE designations on the back of the bottle and the SAE requirements in the book. He looks at me like I have 3 heads and repeats that it is 5W-30, it is totally good. Someone.... kill me please! He has no clue what I am trying to explain.
So I couldn't sleep knowing what he is doing, and I ran to Amazon to see if I can at least get zinc to add to the wrong oil and try to help the cam followers and rockers survive this next year. I found this. I ordered a few bottles and had them shipped to his shop, and I explained to him that these need to be dumped in to at least make an attempt in not prematurely wear the engine that likely is worth $20,000 or more!
So the real question is, will he actually dump these into the machine, or will he toss them on a shelf never to be seen again? We may never know. But I bet next winter he will once again shop for the cheapest oil on earth to put in a machine that costs as much as some peoples home. He is who he is, you can never change that.
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Reviewed in the United States on February 6, 2023
★★★★★ 5
Works good for my old tractor
Put it in my old 1953 Ford Golden Jubilee
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Worthy buy!
These are high quality clips. The tool is nice and strong.
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Reviewed in the United States on December 28, 2025