GearMo GM-FTDI8X-M 8-Port USB 2.0 to RS-232 DB9 Converter

Eight DB9 serial ports from one USB 2.0 link

The GearMo GM-FTDI8X-M gives industrial users eight fully addressable RS-232 COM ports through a single USB 2.0 Type-B connection. It targets engineers, automation technicians and lab managers who must attach legacy PLCs, meters or CNC gear to modern laptops or rack PCs. The rugged metal chassis and included DIN-rail or wall brackets suit cabinet and machine-side mounting. Buyers who need more than eight simultaneous serial channels or native USB 3.x throughput should look elsewhere.

Eight ports with COM retention and LED status

Each DB9 port appears as a persistent COM number in Device Manager, so reboots or cable swaps do not reshuffle assignments. Per-port Power, RX and TX LEDs give immediate visual confirmation of link activity and data direction. The adapter draws operating power from the USB bus in self-powered mode; a 9 to 48 V DC input is available when connected equipment requires pass-through power. No internal buffering or flow-control specifications are published, so sustained high-throughput streaming should be validated in the target application.

Fanless metal enclosure runs silent in cabinet heat

The sealed aluminium housing acts as a heatsink, keeping surface temperature low during continuous multi-port traffic without any moving parts. Power consumption stays modest because the FTDI chipset handles eight UARTs from the single USB 2.0 upstream link. The 9 to 48 V auxiliary input accepts industrial DC rails directly, eliminating the need for a separate supply in most panels. CE, FCC, REACH and RoHS markings confirm baseline regulatory compliance for commercial deployments.