waveshare Industrial USB to 4-CH TTL Converter Adapter USB to UART Support Multi Protection/Systems /Win7/8/8.1/10/11, Linux, etc

Extending USB to 4CH TTL (UART) with hardware flow control, allows concurrent and independent communication for each channel. Onboard TTL serial port 3.3V and 5V voltage level switch, allows selecting TTL level
Multiple Protection, Safe And Stable---Onboard Resettable Fuse And Protection Diode, Provides Over-Current/Over-Voltage Proof, Improves Shock Resistance
Onboard IO Protection Circuit For Surge Suppress And ESD Protection, Safe And Stable Communication
Multiple Systems Support--- Compatible With Popular Systems Like Win7/8/ 8.1 /10/11, Linux, Android, etc.
Application---Suitable For Industrial/Office Conditions With Strict Requirements For Operating Environment And Devices. 1) Extending USB to 4CH
TTL UART: Industrial chip, 4CH TTL, allows concurrent and independent communication
2) Small size,
easy installation: Flexible installation, suitable for sorts of devices to extend TTL interfaces
3) Reversed mounting holes: Easy wall mount, industrial alloy enclosure, solid and durable.
Aluminium alloy enclosure with oxidation dull-polish surface, CNC process opening, solid and durable, well-crafted Quality USB-B connector, and IDC connector with fool-proof design.