https://coolgear.com/
Coolgear - Industrial Grade USB & Serial Communication Devices
Feb 13, 2026 - Coolgear is a one-stop USB shop that offers Industrial Grade USB products. We supply commercial, industrial, automotive, and medical USB devices.
serial communicationindustrialgradeusbdevices
https://www.usconverters.com/
U.S. Converters LLC - Serial RS232 Data Communication
Data Communication by U.S. Converters LLC. Large selection of USB to Serial, RS232 to RS485 / RS422, Bluetooth, WiFi and serial Ethernet converters in stock in...
data communicationconvertersllcserialrs232