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The Best 4 port serial card of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best 4 port serial card of 2022. Check our ranking below.

2,438 (random) Reviews Scanned

SaleRank No. #1
StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART - Low Profile Serial Card (PEX4S553), Green
  • Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express Expansion Slot
  • 4 Port PCIe Serial Card
  • 4 Port RS232 Card
  • 4 Port Serial Adapter
  • 4 Port PCI Express Serial Card
Rank No. #2
StarTech.com 4 Port PCI Express RS232 Serial Adapter Card - Single-Lane PCI Express - Breakout Cable - RS232 Extension - PCIe Serial Card (PEX4S553B)
  • Native single chip design
  • Includes a full profile and low profile/half-height bracket
  • On chip 256-byte depth FIFO in transmit/receive path of each port
  • Single-Lane (x1) PCI-Express with throughput up to 2.5Gbps
  • Supports hardware and software flow control
Rank No. #3
StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows & Linux (PEX4S953)
  • 4 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 4x DB9 ports w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer; Upgraded version of our popular Serial card PEX4S952
  • OPTIONAL CONFIGURABLE POWER: PCIe multiport serial card provides 12v, 5v, or none through pin 9 w/up to 2A total; Each of the 4 ports are individually configurable; DB44 to 4x DB9 breakout cable incl
  • STANDARD PROFILE & LOW PROFILE BRACKET: PCI Express RS232 serial adapter card has standard bracket pre-installed & 1x low profile bracket incl for versatile install; Supports Windows XP and up & Linux
  • VERSATILE APPLICATIONS: For standard profile desktop/servers with uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanners, oscilloscope
  • English (Publication Language)
SaleRank No. #4
StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile (PEX4S232485)
  • Add two RS232 and two RS422/485 serial ports to your PC through a PCI-Express expansion slot
  • 4 Port PCI Express PCIe Serial Combo Card
  • 4 port (2 x RS232, 2 x RS422/485) serial combo card
  • PCI Express RS485 / PCIe RS485 / PCI Express RS422 / PCIe RS422 serial combo card
  • Dual Profile PCIe serial card adapter with breakout cable
Rank No. #5
StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux , TAA (PEX4S953LP)
  • 4 PORT SERIAL CARD: Serial controller card w/16950 UART based on ASIX AX99100, allows 4x DB9 ports w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer; Upgraded version of our popular card PEX4S952LP
  • OPTIONAL CONFIGURABLE POWER: PCIe multiport serial card provides 12v, 5v, or none through pin 9 w/up to 2A total; Each of the 4 ports are individually configurable; DB44 to 4x DB9 breakout cable incl
  • STANDARD PROFILE & LOW PROFILE BRACKET: PCI Express RS232 serial adapter card has low profile bracket pre-installed & 1x standard bracket incl for versatile install; Supports Windows XP and up & Linux
  • VERSATILE APPLICATIONS: For low/standard profile desktop/servers w/ uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanner, oscilloscope
  • English (Publication Language)
Rank No. #6
SIIG Legacy and Beyond Series Quad (4 Port) Serial RS-232 PCIe Card with 16C550 UART
  • Quickly adds four RS-232 serial ports through an available PCI Express slot
  • Supports serial port data transfer rates up to 115.2 Kbps, compatible with 16C550 UART
  • 256-byte depth FIFO buffer supports fast data transfer especially in a multitasking environment
  • Perfect solution to connect with a POS system, industrial testing and control device, security system, logistic management equipment, etc.
  • Chipset: ASIX/MosChip MCS9900CV-AA.
SaleRank No. #7
StarTech.com 4-Port Serial PCIe Card, Quad-Port PCI Express to RS232/RS422/RS485 DB9 Serial Card, Standard/Low-Profile Brackets, 16C1050 UART, ESD Protection, Windows/Linux (PS74ADF-SERIAL-CARD)
  • 4-PORT PCIE SERIAL CARD: On-board DIP switches allow each DB9 serial port to operate in its own independent mode, enabling the connection of RS-232, RS-422, and RS-485 devices; LED indicators to monitor data transmit/receive status
  • CONFIGURABLE POWER: Quad-Port PCI Express Serial Adapter Card features configurable power of 12V (1.5A per port), 5V (1.5A per port), or no power (RI) over pin 9 via auxiliary SATA power; Per-Port power modes are individually configurable via jumpers
  • APPLICATIONS: Ideal for desktops and servers, with a wide range of uses such as point-of-sale terminals, PLCs, factory control and automation, scientific sensors, medical equipment, scanners, and oscilloscopes; DB9 ports work with screw-locking cables
  • STANDARD & LOW PROFILE BRACKETS: TAA-Compliant Serial Card is equipped with two standard profile brackets (pre-installed), and includes four low-profile brackets for compatibility with small form factor desktops/servers
  • TECH SPECS: Asix AX99100 Chipset; 16C450 and 16C550 UART compatible; 4x 9-Pin D-Sub Ports; Max Baud 921.6Kbps per port; 256 Byte FIFO; COM Retention; Supports Windows and Linux; Odd/Even/Mark/Space/None Parity Modes; 5/6/7/8/9 Data Bits; PCIe 2.0 x1
Rank No. #9
4 Port RS-232 DB9 Serial M.2 B+M Key Controller Card, SY-PEX15072
  • Compliant with PCI Express Base Specification 1.1. Support 4 x UART serial ports.
  • Built-in 16C550&16C570 compatible UART
  • 256-bype deep transmit/receive FIFOs
  • Data transfer rate up to 230400bps
  • Plug-n-Play, I/O address and IRQ assigned by BIOS
Rank No. #10
MZHOU PCIe SATA Card 4 Port Expansion Card - 1X Serial- Adapter Converter Card Compatible with PCI-E 3.0 ASM1064 Chipset with 4 Connections
  • The adapter has 4 independent 18-pin standard serial ports, such as the integrated serial interface, which makes the connection more stable.
  • The adapter is a PCI-E 4-port ASM1064 Chipset serial port card, which has 4 standard SATA ports.
  • Data transfer rates of up to 6 Gbps on each port, Compatible with Windows 10 /11 / synology /Ubuntu.
  • Good performance - the adapter is well made, providing stable and effective data loss control. And it supports hot swap.
  • Perfect solution for connection with POS systems, industrial test and control devices, security systems, logistics management systems, printers, scanners, etc

Last update on 2024-10-23 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best 4 port serial card?

Do you get stressed out thinking about shopping for a great 4 port serial card? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching 4 port serial card, which is why we have assembled a comprehensive list of the greatest 4 port serial card available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 4 port serial card that you consider buying. Your questions might include the following:

  • Is it worth buying an 4 port serial card?
  • What benefits are there with buying an 4 port serial card?
  • What factors deserve consideration when shopping for an effective 4 port serial card?
  • Why is it crucial to invest in any 4 port serial card, much less the best one?
  • Which 4 port serial card are good in the current market?
  • Where can you find information like this about 4 port serial card?

We’re convinced that you likely have far more questions than just these regarding 4 port serial card, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 4 port serial card, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 4 port serial card. Make sure that you are only using trustworthy and credible websites and sources.

We provide an 4 port serial card buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 4 port serial card currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 4 port serial card has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 4 port serial card?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 4 port serial card.
  5. Customer Ratings: Number ratings grade 4 port serial card objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 4 port serial card.
  7. Product Quality: You don’t always get what you pay for with an 4 port serial card, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 4 port serial card is should be an indication of how long it will work out for you.

We always remember that maintaining 4 port serial card information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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