10 bestSerial Port Cardsof December 2025
112M consumers helped this year.
1

StarTech.com 2 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART PEX2S553 (Green)
StarTech

10.0
2

Cadyce USB to Serial (RS-232) Converter (Supports for Mac O/S)
CADYCE

10.0
3

UGREEN USB TO DB9 RS-232 adapter Cable (2 m) with USB Male Connectors, RS232 Male, Connect a RS-232 serial device as a modem to a USB port on your computer - Multicolour
UGREEN

9.7
4

M.2 to SATA3.0, Expansion Card, 6 PortsSATA 3.0 Controller PCIe Expansion Card For ASM1166 Chip, Adapter Card PCIE3.0 X2 16Gbps, SATA3.0 6Gbps x 5 Support 6 SATA Devices
Bewinner

9.5
5

StarTech.com PCI Express Serial Card – 2 Port – Dual Channel 16C1050 UART – Serial Port PCI Card – Serial Expansion Card
StarTech

9.2
6

StarTech.com 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART (PEX4S553)
StarTech

9.0
7

BEYIMEI PCIe SATA Card 2 Ports, PCI-E to SATA Expansion Card,6Gbps PCI-E (2X 4X 8X 16X) SATA 3.0 Controller Card for Windows10/8/7/XP/Vista/Linux,Support SSD and HDD
BEYIMEI

8.7
8

SaiRetail.Com SATA Card 4 Port with 4 SATA Cables, 6 Gbps SATA 3.0 Controller PCI Express Expression Card with Low Profile Bracket Support 4 SATA 3.0 Devices
Generic

8.4
9

IO Crest 2 Port PCI Express 1.0 x 1 to Industrial Serial DB9 COM RS232 Converter Adapter Controller for Desktop PC with Low Bracket
IO Crest

8.1
10

zdyCGTime 1Port DB9 RS232Serial Port Bracket to 10 pin HeaderRibbon Cable Connector Adapter, DB9 Serial Male to 10P Motherboard Header Panel Mount Cable Serial Port Bracket (12in 4Pcs) (1 Port)
zdyCGTime

7.9
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