Features: Brand new and high quality Seamless Connectivity Expand your device's capabilities with this M.2 to 4 port RS232 Adapter Card, providing four additional ports for effortless data transfer. Perfect for professionals in various industries. Durable and Reliable Crafted with high quality metal, this adapter card is designed to withstand frequent use, ensuring long lasting reliability. Versatile Compatibility Compatible with Windows and other systems, this adapter card caters to a wide range of users who require reliable serial connectivity. Compact and Convenient With its compact design, this adapter card can be easily installed in a variety of settings, making it suitable for both professional and personal use. Easy Plug and Play Enjoy a hassle free installation experience with this adapter card. Simply plug it in and start using it without any additional software required. Specifications: Type: PCI-E Product Name: M.2 to RS232 Card Interfaces : M.2 Port: 4xRS232 Chipset: AX99100 Sytem Support: Windows/VISTA/Linux Package Includes: 1 x M.2 to RS232 Card note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!