This is Optcore Technology CO.,LTD --- a professional optical transceiver manufacturer from Chinasfp,sfp+,qsfp,gbic,x2,gpon/epon olt&onu ,xenpak, media converter, fiber optic cable ,which are our strength products.Good compatible for Cisco, Hp, Huawei,H3C/3COM,D-LINK,Tp-link,Extreme,Zyxel,Rad,Planet,Qlogic,IBM,Enterasys.Brocade,Alcatel-lucent and other 10 brandsWith years of OEM experience for customers from China and overseas which honor us great reputation all over the world, especially in Asia, Middle East ,North America and Europe. Optcore's products have been exported to more than 40 countries including USA, UK, Germany, Spain, Italy, Israel, Japan, South Korea and so on.Delivery time: have stock for hot sale products, for no stock, 3~5days delivery deadlineGuarantee period: 3 years warranty, accept refund within 3 monthMOQ:5 piecesany need? pls send me your detailed model & compatible brand? let us talk more.mobile/whatsapp:+8618862335417skype:belinda-csjdemail:sales4(at)optcore.netwww.optcore.net