This is a different unit from the one I listed the other day. This is a used item. There are no issues with the operation. All accessories are shown in the photos. This is an OEM product of Ergotron. Please refrain from purchasing if you do not understand that this is a used item, or if you are overly concerned about the condition. To prevent issues such as product switching, we will not accept returns or exchanges. Please understand that we will prioritize the person who purchases the item, even if we are in the middle of price negotiations. Thank you for viewing. Thank you for your consideration.