Best Serial Modems in 2026
Daisy
Last Updated: Feb 7, 2026
Daisy
Last Updated: Feb 7, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
Compatibility: The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast!/Extreme Pro) and others. It's approved for cable internet speed plans up to 1-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
What's in the Box: When you purchase you will get an ARRIS SURFboard SB8200 Cable Modem, Power Supply, Quick-Start guide, and 2-year warranty card.
Ethernet Ports: Has two 1-Gigabit ethernet ports to connect to a Wi-Fi router or other wired device.
Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST.
Warranty Provided by ARRIS: Product ships with 2-Year Limited Warranty.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing. .Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST.Warranty Provided by ARRIS: Product ships with 2-Year Limited Warranty.
Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
Compatibility: The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast!/Extreme Pro) and others. It's approved for cable internet speed plans up to 2.5-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
What's in the Box: When you purchase you will get an ARRIS SURFboard S33 Cable Modem, Power Supply, Quick-Start guide, and 2-year warranty card.
Ethernet Ports: Has one 2.5-Gigabit ethernet port and one 1-Gigabit ethernet port to connect to a Wi-Fi router or other wired device.
Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST.
Warranty Provided by ARRIS: Product ships with 2-Year Limited Warranty.
32 downstream x 8 upstream DOCSIS 3.0 bonded channels
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Kanga Supply | 9.72 | ❌ | ❌ | ❌ |
Netgear Certified Refurbished product is manufacturer refurbished to work and look as new with 90 Day Warranty and email support. All accessories are included with limited documentation and additional information online.
Eliminate monthly cable modem rental fee's ($120 or more a year).
DOCSIS 3.0 Cable Modem with 1 Gigabit Ethernet port.
Up to 680Mbps download and upload speed. Separate router required for WiFi. 16x4 channel bonding
Netgear Refurbished product may have a removed serial number. You will need to state the product is refurbished (state the full part number) if emailing customer support. See the attached (image) flyer to obtain the Serial Number and MAC Address information that maybe needed by your Cable provider before contacting them.
Gigabit Ethernet port—Fastest wired speeds to connect your router or computer
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Newfangled Networks | 6.15 | ❌ | ❌ | ❌ |
OS is compatible with Server 2012, Server 2011, Windows 8 64 bit, Win 8, Windows 7 64 bit, Win 7, Server 2008 64 bit, Server 2008, Vista 64 bit, Vista, Server 2003 64 bit, Server 2003, XP 64 bit, XP, NT 4.0, 2000, ME, 98, 95, 3.1, Linux and DOS
Operating Temperature conditions are 0 to 50 degrees C, Non-Operating Temperature conditions is -20 to 70 degrees C
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
U.S. Robotics Courier Lite 56k Dial Up Business Modem - Serial - 56 kbit/s - ITU V.17, ITU-T V.29, ITU-T V.27ter, ITU-T V.21, EIA 578 Class 1, EIA 592 Class 2.0, ITU-T Group III Fax Technology - ITU-T V.92, ITU-T V.90, ITU-T V.34, ITU-T V.32bis, ITU-T V.32, ITU-T V.23, ITU-T V.22bis, ITU-T V.22, ITU-T V.21, ITU-T V.44, ITU-T V.42bis, ... Modulation - 14.4 kbit/s Fax Transmission Data Rate
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ostent | 9.65 | ❌ | ❌ | ❌ |
Industrial-Grade GSM Modem
Based on Wavecom Q2303A Module
COM/RS232/Serial Port Interface
Control via AT Commands
Support Dual Frequencies: GSM 900/1800MHz
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ostent | 9.65 | ❌ | ❌ | ❌ |
Industrial-Grade GPRS Modem
Based on Wavecom Q2426B Module
COM/RS232/Serial Port Interface
Control via AT Commands
Support Dual Frequencies: GSM/GPRS 850/1900MHz
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ebid-dealz | 9.70 | ❌ | ❌ | ❌ |
V.92/56K download speeds and 48K upload speeds
Dial-up and 2-wire leased line support. V.44 compression improves data throughput rates
with RS-232 Serial Connector
Class 1.0 and Class 2.1 faxing at speeds to V.34/33.6Kbps (Super G3)
Error Correction Mode (ECM) provides fast and reliable fax transmissions
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DiAP | 3.10 | ✅ | ✅ | ✅ |
✅The BulletLTE-NA2 provides a compact, robust, feature packed industrial strength wireless solution using incredibly fast 4G/HSPA+/LTE network infrastructure.
✅The BulletLTE-NA2 delivers improved North American Band Support, and provides up to 150 Mbps download and 50 Mbps upload. Connect any device, old or new, Serial or Ethernet and provide cellular remote access using the BulletLTE-NA2.
✅Connect any device, old or new, Serial or Ethernet and provide cellular remote access using the BulletLTE-NA2.
✅The BulletLTE-NA2 provides features such as 10/100 Ethernet with PoE, RS232 Serial Data, 2x Programmable I/O and Standalone GPS.
✅Offering enhanced, secure communications with its integrated Firewall, IPSec VPN Tunneling, IP/MAC Access Control Lists, the BulletLTE-NA2 is a solution worth looking at!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HDD Shop | 7.97 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PUSR IOT Technology Limited | 5.05 | ❌ | ❌ | ❌ |
Work Mode: Transparent Mode, HTTPD Client Mode, SMS Mode
TCP Server/Client,UDP, Modbus RTU to TCP
RS485/232 to 4G modems
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Lubeby Smart | 6.55 | ❌ | ❌ | ❌ |
Wired Ethernet Port: WAN *1, LAN * 1, one can be WAN or LAN port and another one can be LAN port
Power Supply: DC 9-36V
Frequency band: TDD-LTE, FDD-LTE, WCDMA, GPRS
Configuration: Web page Function:serial to cellular
Network: ANP, VPN(PPTP), PPPOE, DHCP, Static IP
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PUSR IOT Technology Limited | 5.05 | ❌ | ❌ | ❌ |
RS485/232 to 4G modems
EFT/Surge IEC 61000-4-5 Level 3
ESD IEC 61000-4-2 Level 3
Hardware watchdog
Work Mode: Transparent Mode, HTTPD Client Mode, SMS Mode
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ebid-dealz | 9.70 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Advantech Corporation | 3.20 | ❌ | ❌ | ❌ |
Computers & terminals use one modem without switching
Connect two PCs to one peripheral
Use with modems, scanners, scales, other serial devices
Quick plug-and-play installation – no configuration required
May be left permanently installed
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade GSM Modem.
(2)Based on Wavecom Q2406B Module.
(3)RS232/Serial Port Interface.
(4)Working Frequencies: GSM/GPRS 900/1800Mhz.
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade GSM Modem.
(2)Based on Wavecom Q2406B Module.
(3)RS232/Serial Port Interface.
(4)Working Frequencies: GSM/GPRS 900/1800Mhz.
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade Maestro M100 3G UMTS/WCDMA Modem
(2)Based on Sierra SL808X Module
(3)RS232/Serial Port and mini USB Interface
(4)Working Frequency: *Dual -Band WCDMA: 850/1900MHz or 900/2100MHz *Quad-band GSM/GPRS/EGPRS:850/900/1800/1900MHz
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade GSM Modem.
(2)Based on Wavecom Q2406B Module.
(3)RS232/Serial Port Interface.
(4)Working Frequencies: GSM/GPRS 900/1800Mhz.
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade GSM GPRS Modem.
(2)Based on Wavecom Q2406B Module.
(3)RS232/Serial Port Interface.
(4)Working Frequencies: GSM/GPRS 900/1800Mhz.
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FML Store | 4.20 | ❌ | ❌ | ❌ |
(1)Industrial-Grade GSM GPRS Modem.
(2)Based on Wavecom Q2406B Module.
(3)RS232/Serial Port Interface.
(4)Working Frequencies: GSM/GPRS 900/1800Mhz.
(5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Summer_chuxia | 9.92 | ✅ | ✅ | ✅ |
The HART smart converter, which is developed and manufactured according to industry standards, can communicate with any manufacturer's HART meter, such as Rosemont, EH, Siemens, Cologne, Yokogawa, Chuanyi, etc. At the same time, its shape is designed to be integrated and easy to install and carry. The standard USB interface and serial bus are used to supply power, which makes the user convenient and fast in use.
Intelligent converter is specially designed for industrial product integration. It adopts special design in temperature range, vibration, electromagnetic compatibility and interface diversity. Provide high quality assurance for your equipment.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PCNation | 9.57 | ❌ | ❌ | ❌ |
Remote MANAGEMENT: Avocent ACS 8000 32-Port advanced terminal management Serial Console Server with analog modem and dual AC power supply allows users to access and troubleshoot remote locations using automatic network failover to Cellular (and failback)
Automated PROVISIONING: Offers Fast, automated configuration with zero touch provisioning; compliant with data center access and security policies; powerful Dual-core ARM processor and 16GB of flash memory to support automation scripting
8 USB 2.0 Ports: support external devices, IoT products and IT equipment; Features digital input/ output & sensor ports
Power DEVICE MANAGEMENT: Dual 1 gigabit Ethernet port for network connectivity and failover and secure in band management for daily networking management; expanded support for Rack PDUs from Vertiv, server, APC, Raritan and Eaton along with Vertiv GXT4 UPS systems
Environmental sensor port: to connect temperature, humidity, differential pressure, leak, door pin sensors
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| N\\A | 5 |
| Arris | 2 |
| Ostent | 2 |
| Pusr | 2 |
| 3Com | 1 |
| A.dinsenen | 1 |
| Advantech | 1 |
| Avocent | 1 |
| Compuport Centre Inc | 1 |
| Fml | 1 |
We've carried out a comprehensive analysis of 20,053 reviews on modems serial, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select modems serial priced around $274.76, with top brands including arris and startech and zoom
Our team of expert editors reviewed these high-quality items and handpicked the top 24 modems serial for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and amazon.com .
We are dedicated to assisting our users in finding the right modems Products based on their needs, saving them considerable time when choosing which modems serial to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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