Product Features Prevent Accidental Removal of Data Cable Prevents Damage to USB/FireWire Ports Fits 1/4"-20 and 3/8" Tripod Mounts Accepts Thin, Medium, and Thick Cables Built from Aircraft Quality Aluminum Made in The U.S.A. In the Box Tether Tools MC Multi Cable Mounting Plate Overview Stay Connected and Protect Sensitive Ports with TetherBlock Camera data ports are fragile and expensive to repair. When shooting tethered in studio or on location, a trip or tug can cause your tether cable to become dislodged or cause serious damage to your camera’s data ports. The TetherBlock is a must-have for photographers shooting tethered both handheld or using a tripod. The TetherBlock is designed to prevent accidental removal of a cable from your camera’s data ports by snaking a USB, FireWire, or HDMI cable through one of TetherBlock’s three channels. A 1/4?-20 slotted screw attaches the plate to the camera, and can be tightened with a screwdriver or coin. From there, either shoot handheld or attach the TetherBlock to your camera’s tripod mount and you’ll be able to shoot tethered to a computer without fear of your tethered cable becoming unplugged. Easy to mount, the TetherBlock has a 1/4?-20 male thread to attach directly to the bottom of your camera. TetherBlock If you have an Arca-style ball head for your tripod, we recommend the TetherBlock Arca.