juniper ex4400 em 4s smart switch

{"cid":"91223161","title":"Original New EX4400-EM-4S Juniper Smart Switch with 4 Ports 1GbE\/10GbE SFP+ Network Switch","imgUrl":"https:\/\/img.chinax.com\/nimg\/62\/64\/299e1c3b5f5c93db11e5c36744ba-200x200-1.jpg","attrs":{"Price":"$499-508","Model Number":"EX4400-EM-4S","Minimum Order Quantity":"1","communication mode":"Full-Duplex & Half-Duplex","transmission rate":"10\/100\/1000Mbps","Place of Origin":"Beijing","function":"LACP, POE, QoS, SNMP, Stackable, VLAN Support","ports":"\u2265 48","private mold":"No","products status":"Stock","Certification":"CE RoHS FCC","Function":"LACP, POE, QoS, SNMP, VLAN Support","Condition":"NIB Original","Shipping":"DHL UPS FEDEX","Supply Ability":"50 Piece\/Pieces per Day","Warranty":"1 year warranty+life service"}}