NOTE: Check the interface type of the product before buying, that the interface is 9-pin RS232 Female, NOT USB-to-VGA monitor cable. This Serial cable to USB adapter is designed for connecting 9 pin serial devices such as DB9 equipped PCs, routers, GPS, Programming machine, barcode scanners, label writers, serial modems, digital cameras, card readers, palm PCs and digital organizers, etc. Premium Material: Tinned copper conductor and triple shielding ensure the best data transfer rate. Soft, brushed PVC jacket provides ultimate wire flexibility. 30cm long female serial to USB adapter is with USB-Powered design requires no bulky power supply with superior performance, offering an easy connectivity for serial plug devices. MEIRIYFA USB 2.0 Female to RS232 Female DB9 Serial Cable connects a serial DB9 (9 PIN) device, such as a modem, to a USB port on your computer. ?NOTE: It's USB to RS232 FEMALE adapter!!!.