Maintain access to critical RS-232 devices without replacing proven equipment. Advantech’s BB-232USB9M-LS bridges a USB host connection to a single DB9M serial port, giving service laptops and modern workstations a practical path to legacy hardware. It is a straightforward way to keep barcode scanners, controllers, instrumentation, and other serial peripherals in service when native COM ports are no longer available. This adapter is designed for environments where compatibility matters more than convenience features. By presenting a USB-to-serial connection in a compact form factor, it helps reduce downtime during maintenance, commissioning, and replacement cycles. The DB9M output aligns with common RS-232 device interfaces, making it easier to connect to established equipment without custom cabling or larger interface modules. For teams supporting mixed-generation infrastructure, this adapter preserves operational continuity and avoids unnecessary hardware refreshes. It is a practical choice when the requirement is simple: connect one serial device reliably from a USB port and keep the workflow moving.