第一,它的网卡必须是标配的,而不应该是外置或选配的。曾经有一个笑话:一些厂家也说它出售的打印机是台网络打印机,可是在打印机中没有标配网卡,当问起其中的原因时,厂家进行解释说:“万一有的客户不喜欢使用这些网卡,它就可以拿这台打印机当作个人打印机使。” First, its network card must be standard, and should not be external or optional. There was a joke: Some manufacturers also said it is selling the printer is a network printer, but there is no standard network card in the printer, when asked about the reasons, the manufacturers explained: “In case some customers do not like to use these Network card, it can take this printer as a personal printer. ”