Simple, Fast and Smart Managed Switches for Small Business Connectivity The ZyXEL GS1900 Series of 8/16/24/48-port GbE Smart Managed Switch with Gigabit speed and essential managing functions bring your business network more fexibility and connectivity. The 1900 Series consists of eight (8) models--the GS1900-8, GS1900-8HP, GS1900-16, GS1900-24E, GS1900-24, GS1900-24HP, GS1900-48 and GS1900-48HP.