| Business | Phone |
| Atlas Computer 1240 Iroquois Ave, Naperville 60563 | (630) 596-0020 |
| Axon Logic Technology 1115 Wilder Ct, Naperville 60540 | (630) 427-0832 |
| Chicago Computers 1271 Rickert Dr 107, Naperville 60540 | (630) 355-3400 |
| Cintronics 31w154 91st St, Naperville 60564 | (630) 499-9973 |
| Digitalnet 1152 Wydown Ct, Naperville 60540 | (630) 357-6220 |
| Cognex Corp 800 E Diehl Rd, Naperville 60563 | (630) 505-9990 |
| Dartek Computer Supply Corp 175 Ambassador Dr, Naperville 60540 | (630) 355-3335 |
| Comp Usa 324 S State Route 59, Naperville 60540 | (630) 548-0300 |