The National Instruments PCI-485/8 Serial Interface (Part Number: 777641-08) is engineered to address common challenges associated with ground loops in industrial applications, where varying ground voltage levels can affect device communication. This device utilizes RS-485 technology and offers optical isolation of up to 2,000 V, ensuring reliable performance even in harsh conditions. The PCI-485/8 features eight serial ports, each connected via a SCSI 68-pin connector, terminating in standard DB-9 male connectors for flexible integration. The interface supports advanced features including adjustable baud rates from 57 b/s to 2 Mb/s, with precision accuracy of 1 percent for non-standard rates and 0.01 percent for standard rates. Compatible with a broad array of operating systems including Windows 9x, 2000, Me, and XP, the PCI-485/8 is designed for multiprocessor environments and supports hyper-threading for optimized throughput. Although the PCI-485/8 has been categorized as obsolete by National Instruments, it remains available for purchase and repair through authorized vendors such as Apex Waves. For additional details, user manuals and maintenance guides are available for download, and interested customers should contact a sales representative for pricing information.