| Business | Phone |
| Egi Electronics 5603 N Clark St, Chicago 60660 | (773) 561-8556 |
| Data Designs Inc 1502 W Division St, Chicago 60622 | (773) 772-7600 |
| Computer Architects Intl 2144 N Clybourn Ave, Chicago 60614 | (773) 913-2009 |
| Computer City 1120 E 47th St, Chicago 60653 | (773) 924-1400 |
| Cyber Cycle 5242 W Diversey Ave, Chicago 60639 | (773) 286-2000 |
| Chicago Technology Supply 233 E Erie St, Chicago 60611 | (312) 981-9000 |