L-com's AL-ECF504-AA12 USB surge protector is a commercial quality device designed to protect a computer's sensitive USB ports from power surges and spikes from attached devices. To ensure USB 2.0 speeds, the device uses ultra-low capacitance diodes to protect the data lines. In addition, a protection device clamps the power lines to safe levels. This USB surge protector is ideal for protecting a PC from WiFi client adapters and surveillance cameras used with long USB extender cables. Other uses include protection from surges when using USB-RS422/485 converters with long cables. The AL-ECF504-AA12 can be mounted in an enclosure, panel, wall plate, or used in-line as a standalone product. It features a fully shielded 12" pigtail cable.