As technology shifts more layoffs loom at tech companies

Cisco Systems Inc's announcement on Wednesday that it plans to lay off 5,500 employees is unlikely to be the last round of Silicon Valley pink slips as hardware companies struggle to keep up with rapid technology shifts, analysts and recruiters said.

Companies that traditionally have made most of their money selling computers, chips, servers, routers and other equipment are especially vulnerable, analysts say, as mobile applications and cloud computing become increasingly important.