Chapter 2. Hardware Setup26Securing the CablesFor added safety, use ATEN Lok-U-Plug cable holders to secure the cablesfrom your attached devices in place on the eco PDU unit. Secure the cableholders using the specially designed holes around the individual power outlets,as shown below:Note: 1. Cable holders are an optional accessory. See Cable Holders, page 9.2. Use only the ATEN Lok-U-Plug cable holders that have beenspecifically designed to work with the eco PDU. Using any other kindof cable securing device could be highly dangerous.