4 PORT ETHERNET MODULE - A CIRCUIT PACK. THESE ARE OPERATIONAL PRINTED CIRCUITS BOARDS WITH MOUNTED COMPONENTS THAT ACT AS MODULES AND FUNCTION AS TRANSMITTERS, RECEIVERS, REGENERATORS OR SWITCHES. THE MODULE PROVIDES SERVICES FOR BRIDGING FROM AN ETHERNET LOCAL AREA NETWORK ( LAN ) TO AN ATM WIDE AREA NETWORK ( WAN ).

GIRS 1 AND 6, TEXT TO 8517 NOTE 2(a) TO SECTION XV1