Expand your computer's capabilities with the SIIG JJ-E02111-S1 Dual PCIe Serial Adapter. This high-quality adapter allows you to add two serial ports to your computer, providing you with more options for connecting your devices and peripherals. Whether you need to connect a printer, scanner, or other external device, this adapter has you covered.With its reliable performance and easy installation, the SIIG JJ-E02111-S1 is the perfect choice for anyone looking to enhance their computer's functionality. Whether you're a professional computer user or just need a reliable adapter for your home setup, this adapter is sure to meet your needs.