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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
4.6 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Nice salt and pepper grinders
Size: 2 Pack (95ml), Color: Black - Storage Base
Works good. Batteries last a long time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
I am so spoiled and I hope you will be too!
Size: 2 Pack (95ml), Color: Black - Storage Base, Size: 2 Pack (95ml), Color: Black - Storage Base
Great product! So far I have purchased six sets… one for me and five others for gifts. And I only give gifts that are helpful.
I like that the grinders are adjustable. I charged them when I think they need it. They have never stopped where I had to charge either of them.
I feel so spoiled. Wish everyone could have these. I are very dependable. I’m sure I will be buying more in the future.
Thank you for making a wonderful product. I, as well as others, are enjoying them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Good quality.
Color: Black
Love these. Charge quickly. Love the red light while charging that changes to white when it is full. Love the rack and brush for cleaning that comes with it. Works as it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 5
Works great
Color: Black
Very nice easy to use and charge
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Very nice grinders
Color: White&Black, Color: White&Black
Still going strong after six months of use. The product is sturdy and easy to hold, the adjustable grinding coarseness is an added bonus and make the grinders easy to use. If you are looking for cordless rechargeable grinders this is the best value for your money. The base is a little hard to clean but a quick brush removes all of the excess grinds. They stay fully charged on the stand and I have never had an issue with them being out of battery.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
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