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Best Serial Port Cards 2026
Best Choice01StarTechStarTech.com 2-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 (2S232422485-PC-CARD)
9.6
Exceptional
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 02StarTech
StarTech.com PEXESAT322I 2 Port SATA III PCI Express Interface Card - 2 Port Serial ATA 6Gbps PCIe Card - SATA/eSATA Controller Card for 2 Drives
9.4
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 03InLine
InLine PCIe Interface Card 2X Serial RS-232 COM Port AX99100 Low Profile for Windows & Linux 76619D
9.3
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 04Sxhlseller
2 Port PCI Express RS232 DB9 Serial Port Card for XP, Vista, 7, 8.x, 10, 11 32/64bit for Linux, Serial PCIe Expansion Card, PCIe Serial Host Controller Card
9.2
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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Value for Money05DigitusDigitus 2-Port Serial PCI Express Card
12% Off
9.1
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 06Create idea
Create idea Port Card PCI Express Serial Card PCI Express Serial Extension Adapter PCI-E to RS232 Serial Expansion Card Compatible with Windows XP/Vista/7/8
9.0
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 07SIENOC
Sienoc PCI Express PCI-E Dual RS-232 Serial Port PCI-E 2 port serial controller DSUB9 DB9 RS232 COM Card Adapter PCI-E PCI Express Card Adapter Converter
8.8
Very Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 08KALEA-INFORMATIQUE
KALEA-INFORMATIQUE © Controller Card PCI Express (PCIe)/1 Series COM RS232 Port + 1 Port Parallele DB25 LPT/Seven/with WCH382L Chipset – Supports Windows 8.1, 10/8/vista/XP + LINUX 2.6.X/3.x + Back
8.7
Very Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 09Vikye
PCIE RS232 Expansion Card PCIe Serial Host Controller Card with 2 Port PCI Express RS232 DB9 Serial Port, ASIX AX99100 Chip, Support for
8.5
Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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- 10
LogilinkLogiLink PCI Express Card with 2x Serial Ports (RS232, 9-pin)
8.4
Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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