Caxico USB 2.0 Ethernet 10/100 Network LAN RJ45 Adapter Automatically negotiates 10/100 Mbps connection rate, depending on speed of the network Full-speed (12Mbps) USB device Supports Full Duplex Flow Control (IEEE 802.3x) Usually, you will get it actually in 9~19 days, If you are in the USA and the item is NOT Fulfilled by Amazon. the item will be sent to you by USPS with shipping information from China. The estimated delivery time offered by Amazon is not the real time. Your patience is highly appreciated. Hope you will receive your item soon and enjoy using it. Compatible with Windows 98SE / 2000 / ME / XP / Vista (32bit Only); NOTE: Not for Apple MAC OS system About us (Caxico), Professional factory of cable, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours