the product name is Lan Transformer

Shaanxi Gold-Stone Electronics Co.,Ltd is one of the leading lan transformer manufacturers and suppliers, welcome to buy high quality lan transformer, 1000base-t lan transformer, 10/100 base-t lan transformer, 10/100 base-tx lan transformer, 10/100/1000 lan transformer, t1 e1 cept isdn-pri lan transformer products from our factory.LAN (pulse XFMR filter), LAN-Mater (RJ-45 +      XFMR/LED)Common mode chokes, V0IP XFMR, ISDN, T1, CEPT, XFMRADSL line XFMR, VDSL XFMR/filterMicro filter splitter (CO/CPE side)P0E (Power Over Enternet) drivers10/100 base, 1,000 Base-TX network filter modules Lan   Transformer Catalog10-100 BASE-T SINGLE PORT TRANSFORMER MODULESH1012NL10-100BASE-TX SINGLE PORT TRANSFORMER MODULESH109310-100Base-TX Transformer Modules H1164NL 10BASE-T QUAND SMT TRANSFORMER MODULES E2023NL E2452NL EX2024PE-68011PE-68049L 100Base-TX Magnetics Modules datasheet1000Base-T Low Profile Magnetics Module H5019NL1000BASE-T Magnetic  module H5007NL101001000BASE-T SINGLE DUAL-PORT TRANSFORMER MODULES 1000B-5001F url:http://www.gsmagnetics.com