TP-Link Gigabit Single-Mode Media Converter IEEE 802.3ab IEEE 802.3z (MC210CS)\n\nTP-Link Gigabit Single-Mode Media Converter IEEE 802.3ab IEEE 802.3z (MC210CS)\n\n--Complies with IEEE 802.3ab and IEEE 802.3z\n\n--Provides switch configuration of force/auto transfer mode for FX port\n\n--Extends fibre distance up to 15 km\n\n--Extends fibre distance up to 20 km\n\n \n\nShipping\n\n--We check all items before sending out. All products are brand new, never been used or refurbished except where explicity mentioned about the condition is different.\n\n--Shipping ways: Our products offer free shipping. Free shipping takes 2-5 working days to arrive.\n\n--We also offer Express Shipping ( mostly 1-2 working days). Please select Express Shipping at the checkout page. There is an additional cost for it.\n\n--Please contact us if your item is lost after the 30 days period. We cannot be held responsible for delays caused by your local postal service.\n\n--Most packets arrive in 1-5 da.