4 port serial cards

Multifunctional Intelligent 4-in-1 Type-c3.1 Hub, Charging Port USB 2.0 Universal C-adapter OTG Card Reader YSL

4 Ports USB C HUB USB Ethernet Adapter USB Type C To Rj45 Lan Ethernet Adapter 100Mbps Gigabit Network Card USB 2.0 Dock Station for PC Laptop

PCI E To USB 3.0 Expansion Card 4 Ports 5Gbps High Speed Supply Free Transmission USB3.0 Expansion

PC Chassis Fan Hub 10 Port 12V 4 Pin Fan CPU Cooling Fan PWM Hub for Computer Motherboard Serial

PCIE To 4 USB3.0 Ports Expansion Card PCI Express To USB3.0 Adapter Card with Large 4Pin Power Interface for Desktop PC

VAORLO USB C HUB 3.0 Type C 3.1 4 Port Multi USB Splitter OTG Adapter For Xiaomi Lenovo Macbook Pro 13 15 Air Pro Computer Accessories

2.5 Inch SATA Hard Drive To IDE 44Pin Interface Adapter Card Serial To Parallel Port for Laptop

4 Port M.2 NVME SSD To PCIE X16 Adapter Converter Card Support 2230/2242/2260/2280 Host Controller Expansion Card LED Indicator

PCIE Serial Card Minus40 To 85 Celsius 2 Port PCI Express X1 To DB9 COM RS232 Converter Adapter Controller

Battery Charger 3 Port Battery Charging Hub For Osmo Action 4 3 with Storage for 3 Memory Cards

Hub Computer Mainboard USB2.0 9PIN To 4 Port 9PIN Interface Adapter Card Expansion HUB

USB 3.0 PCIE Expansion Card PH64 2U4U VL805 Chip 5Gbps Transmission 4 Port USB Expansion Card for

RS232 To TTL 2nd Gen Serial Port Flash Cable with MAX3232 and 4 DuPont Connectors.

PCI Expansion Card To 4 Port USB2.0 Hub Adapter HighSpeed Converter Universal PC Accessories

Mini Smallest SIM800L GPRS GSM Module MicroSIM Card Core Wireless Board Quad-band TTL Serial Port With Antenna

Industrial 232 To 485 Converter 4 Digit 232 To 485 Serial Port Converter for Monitoring System

PCI To Dual Serial DB9 RS232 RS‑232 2 Port Extension Adapter Card for Desktops