I need a gigabit switch that can hand out DHCP addresses, ideally 16 to 24 ports. This is for 13 computers used as cash registers/scanners in a portable (laptops, but wired ethernet) environment. Mostly, there won't be an internet connection available so the usual role of a router as DHCP server won't really exist. I might occasionally tether a smartphone to one of the computers and "share" the internet connection, but I don't really see this as an application where a router is...
switch with DHCP server capability
switch with DHCP server capability