81. Panasonic will not be liable for any damage resulting from the operation not inaccordance with this operation manual, or loss of communications, which may ormay not be caused by failure and/or malfunction of this device.2. The contents described in this document may be changed without prior notice.3. For any questions, please contact your dealer.* Brands and product names in this document are trademarks or registered trademarksof their respective holders.●Please use this Switching Hub in place where ambient temperature is from 0 to50 degrees C. Failure to meet the above conditions may result in fire, electricshock, breakdown, and/or malfunction. In addition, do not cover the bent holeof this Switching Hub.Deviation could lead to high internal temperature, equip-ment failure and/or malfunction. If used at a temperature out of the operatingtemperature range, the protection equipment becomes activated and PoEpower supply stops.●Do not stack Switching Hubs. When placing Switching Hubs side by side, leave aminimum of 20 mm space them.●When mounting Switching Hubs in a rack, leave a minimum of 20 mm spacebetween them.●Please note that operation will not be guaranteed if any module other than theseparately sold SFP extension modules (PN54021K/PN54023K) is installed intoSFP extension slot. For the latest information about compatible SFP extensionmodules, check our website.
