For sale is on a TELRAD NETWORKS Model 76-710-16x0/0 power supply carrier. Please note that you are buying the carrier unit with three (3) power supply units included. On the carrier, there is three (3) HiTRON ELECTRONIC CORPORATION power supply units model HIA105-30. These power supply units have auto-ranging input and triple output. This power supply carrier was removed from a working system. Please carefully check the model numbers of your existing equipment to ensure compatibility. The only reason you can return this item is if the item becomes inoperable/damaged during shipping. The item must be returned in the same condition it as it was shipped except in a verifiable case of postal damage. The buyer must pay for return shipping. This item is owned and stored in a non-smoking home. The household has a cat. I try to leave feedback in a prompt manner, and would certainly appreciate the same. If you have a problem with the product or service, please attempt to resolve the issue with me. In most cases, I can help without resorting to negative feedback on either side. Remember the best way to solve any problem that may arise during the transaction is communication between the buyer and the seller. (TelradPCS4)