求翻译：昨天下午，网络交换机因设备老化损害，目前有7台电脑受影响，包含打印机；维修成本与更换成本相差不多，估计成本500元左右，向您申请更换是什么意思？

Yesterday afternoon, the network switch due to equipment aging damage, there are 7 computers affected, including the printer; maintenance costs and replacement costs are similar, it is estimated to cost about 500 yuan, you apply for a replacement

Yesterday afternoon, an aging network switch on the device, there are currently 7 computer with printer, and the impact of cost of maintenance and replacement cost is similar, with an estimated cost of about $500 to replace your application

Because yesterday in the afternoon, the network switchboard the equipment got older the harm, at present has 7 computers to receive affects, contains the printer; The service cost and the replacement cost difference are not many, estimated about the cost 500 Yuan, applies for the replacement to you

Yesterday afternoon, the network switches due to aging equipment damage, there are 7 computers affected, include printers; not much difference in cost of maintenance and replacement costs, estimated to cost around $ 500, to you for replacement

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