Keep legacy serial equipment online without consuming extra PCI slots or multiple host ports. The StarTech ICUSB23216FD converts one USB connection into 16 RS-232 serial ports, giving infrastructure teams a practical way to connect barcode scanners, industrial controllers, lab instruments, and other serial devices from a modern host system. Its rack-mountable chassis is designed for dense deployments where port count matters and cable management cannot be left to chance. For larger environments, daisy chaining multiple hubs adds a path to scale serial connectivity as device counts grow. That makes this adapter a strong fit for operations that need predictable access to older equipment while standardizing on USB-based hosts. This model is positioned for professional use cases where uptime, port density, and deployment flexibility justify a higher-spec adapter. TAA compliance also supports procurement requirements in regulated and public-sector environments. When serial infrastructure still has to perform like production infrastructure, this adapter keeps the connection layer organized, expandable, and ready for long service life.