| Business | Phone |
| Bac Business Systems Po Box 1051, Pasadena 21123 | (410) 360-8740 |
| Computer City Corporate Sales Pasadena 21122 | (410) 255-2846 |
| Computer Network Technology 103 Chelsea Grove Ct, Pasadena 21122 | (410) 439-8400 |
| Computer Parts Distribution 4513 Mountain Rd # 3, Pasadena 21122 | (410) 255-4357 |
| Data Micro Systems 3905 Mountain Rd, Pasadena 21122 | (410) 437-7146 |
| Fairview Electronics 1561 Efford Rd, Pasadena 21122 | (410) 437-8911 |
| Innovative Computer Solutions 8200 Elkwood Ct, Pasadena 21122 | (410) 590-5755 |
| Tds Computers 1564 Colony Rd, Pasadena 21122 | (410) 439-8395 |