Models View all Gearmo USB 4 Port Serial RS232 featuring FTDI Chipset with RX/TX LED Indicators 7 233 1 USB 3.0 10 Port Industrial Metal Hub w/15KV ESD Protection 13 236 1 4 Port USB 3.2 Gen 1 Mini High-Power Hub w/ Port Status LEDs 31 842 2 4 Port USB 3.2 Gen 1 Micro Hub w/ Variable Voltage & ESD Surge Protection 6 131 1 USB to Serial RS232 DB9 Adapter FTDI Chipset, Windows 10 Support 11 431 3 Gearmo USB 2 Port Serial RS232 featuring FTDI Chipset with LED Indicators 2 128 0