Exemption withdrawal: Wireless data modem cards with PCMCIA/USB/PCI express ports no longer eligible for duty benefit. Notification No.20/2016-Central Excise omits serial number 101 from the Table to Notification No.1/2011-Central Excise, excluding wireless data modem cards with PCMCIA, USB or PCI express ports from the 2% duty benefit, enacted under powers of sub section (1) of section 5A of the Central Excise Act, 1944.