US Robotics XJ4288 PCMCIA PC Card modem

Vintage Megahertz US Robotics PCMCIA 28.8 Modem PC Card XJ4288

US Robotics Megahertz 33.6 PCMCIA Modem Kit — Card, Adapter, Cables & Floppy Dis

US Robotics Megahertz 56k PCMCIA Modem PC Card with XJACK Connector XJ5560

3com Megahertz 3CXM556 56K Cellular Modem PC Card PCMCIA xjack

DELL /US ROBOTICS XJ4337 Megahertz 33.6 PC CARD MODEM WITH XJACK DATA/FAX/VOICE

US Robotics XJ1336 PC Card Modem - Used, Untested

US Robotics - Megahertz 56k Modem PC Card with XJACK Connector XJ5560