Startechcom usb 20 active extension cables mf startechcom usb2aaext20m the startechcom usb2aaext20m 20m active usb 20 extension cable offers 1 x usb a male connector and 1 x usb a female connector providing an active extension for usb 20 devices of up to 10m the active usb 20 extension cable is an all in one cable for overcoming distance and power source limitations it incorporates bus powered active circuitry to ensure performance beyond the length limits of standard usb cables