Check the listing for details. T1 Loopback Plug CSU DSU Loopback Cable Pinned 1-4 2-5 LPBK-T1 - QUANTITY OF 10. Condition: New. Listed at 10.00 USD. T1 Loopback Plug CSU DSU Loopback Cable Pinned 1-4 2-5 LPBK-T1 - QUANTITY OF 10Item in Stock by Seller and Ships from Seller's Location in Terrell, Texas. Prompt Shipping. Your purchase satisfaction is paramount. Buy with confidence. It is our privilege and pleasure to serve you. We ship same day if possible or next business day at the latest. We will get your purchases shipped QUICK! Your item will be packed and shipped appropriately to avoid damage. To keep shipping costs down, orders over 2-3 lbs. will likely be shipped via UPS Ground. All items are described in a sincere manner. Some items listed as new may have been opened to take pictures. Some boxes may show a little wear and we do our absolute best to note those. We welcome any questions you might have before purchasing.