Check the listing for details. 453154-B21 453578-001 453156-001 HP VIRTUAL CONNECT 1Gb RJ-45 SFP. Condition: New. Listed at 20.00 USD. PART # 453154-B21 SPARE # 453578-001 453156-001 DESCRIPTION: HP VIRTUAL CONNECT 1Gb RJ-45 SFP CONDITION: NEW IN PLASTIC CLAM SHELL Returns PolicyNo returns accepted without prior return authorization, you must contact us and ask for a Return Merchandise Authorization (RMA) number before returning merchandise; any returned non-defective item (s) or open sealed boxes are subject to 10-15% restocking charge of purchase price. Shipping InfoWe ship thru carrier USPS / UPS & FEDEX... If ordered before 3PM and payment cleared by that time we usually ship the same day otherwise the following business day. Tax PolicyFlorida state residents are subject to sales 6% tax UNLESS RE-SALE CERTIFICATE IS PROVIDED. Customer Service If you have any inquires please feel free to contact us via Ebay -- Will reply email within 30 min.. --- If you are satisfied with out products, will appreciate if you could leave positive feedback and will do the same for your purchase. And if incase you are not satisfied with our product please dont leave a negative or neutral feedback but contact us, we will do our best to help and resolve the problem at the earliest. THANKS.. and have a NICE DAY... :)