Union Computer in University Plaza specializes in PC computer repair, networking installation and troubleshooting and sells a wide variety of small peripherals, including power supplies, external hard drives and cables. While the knowledgeable staff works methodically and quickly and doles out a good bit of advice to customers, the store has no Apple Macintosh service technicians. Generally a call before going into the store can give you a good idea of how long a problem might take to resolve.