Belkin OmniView Pro2 8 Port KVM Switch F1DA108T Rack Mount, on screen display Requires a 12V Adaptor, not included When plugged in, green light comes on, unable to test any further, I am not familiar with this product, sold as is, no returns please See pictures for further information and condition Part of an Electronics/Computor estate, many items being listed Shipping: If you are buying more than one item, please remember to check off the area that requests the seller to send an invoice, so I can combine the order for you before you pay. I offer several methods of shipping, choose which is best for you. Thank you again for browsing in my store, there is always something new and exciting coming your way! Feel free to ask questions, and let me know if there is a problem with an order before putting in a claim with, so we can work things out. Thank you again Estate Treasures by Alana