| Business | Phone |
| A Plus Computer Svc 109 Riviera St, San Marcos 78666 | (512) 787-0093 |
| Central Computers University Dr & Edw Garyamp;, San Marcos 78666 | (512) 396-3825 |
| Laser Service Usa Inc 350 N Guadalupe St # 140, San Marcos 78666 | (512) 353-4600 |
| Pentar Enterprises The Settlement, San Marcos 78666 | (512) 396-0694 |
| Robco 1702 N Bishop St, San Marcos 78666 | (512) 396-0558 |
| Southern Computer Service Po Box 247, San Marcos 78667 | (512) 396-1731 |