【DB9 Null Modem Adapter】:These DB9 Null Modem adapters allow file transfer the computers to various serial port equipment.Converts standard, straight wired cables to null modem wiring,Very easy to use ,save the cost and hassle. | 【Superior Quality】:Made of metallic Iron nickel-plated shielding shell construction,they are durable and anti-rust.UL grade 94V-0 connector insulator satisfies flammability requirements. | 【Low Profile Design】:We adopt the low profile and slimline design, focus on saving space and reduces leverage strain on computer ports. Quickly change the gender,or join two cables together.Provides a secure connection. | 【Stable Data Transmission Function】: The DB9 Gender Changer can connect two DTE or DCE devices with no conflict in data transmission,they are very stable,no signal attenuation, to ensure high-definition screen signal transmission | 【GUARANTEE SERVICE】:100% Satisfaction guarantee and reliable customer service within a 24 hour time support,If you have any questions, please contact us immediately and we promise to give you a satisfactory answer.