| IOGear (G-UC232A) Serial Adapter 0.5 Mbps, External Adapter, USB 1.1 Interface, Cabling: Serial RS-232, USB, Cable Connectivity, For: PC Platforms | $23 - $37 from 8 stores | | Quatech SSPXP-100 Serial Adapter 0.9 Mbps, Expansion Card, PCI-Express, ExpressCard/34, ExpressCard/54 Interface, Cabling: Serial RS-232, For: PC Platforms | $87 - $109 from 2 stores | | |