cat5 Cisco catalyst series 5000 and 4000 switches (i.e.: running the catalyst OS, not IOS).
cisco Cisco router, PIX, or switch such as the 3500XL or 6000 running IOS (or IOS-like) OS.
css Cisco content services switch.
h3c 3Com SuperStack 4, H3C, HP Networking ('A' & some 'E' portfolio, post 2010 3Com acquitision), some Huawei equipment.