连接打印机电缆
两根线缆的连接器略有不同，都配有 Shopify 的零售定制套件。一根线缆将打印机连接到现金抽屉，另一根线缆将打印机连接到路由器。注意在每种情况下使用正确的线缆。
连接收据打印机与现金抽屉：
连接收据打印机与路由器：
设置打印收据的默认打印机
连接打印机时，系统会将该打印机自动设置为收据打印的默认打印机。如果默认打印机不可用，则您将无法打印收据。如果您有多台打印机，则可以从 Shopify POS 更改默认打印机。
步骤：
在 Shopify POS 中，点击 ≡，然后点击管理已连接的硬件。
在收据打印机下，点击您想设置为默认打印机的打印机。
启用默认收据打印机选项。
打印测试收据
设置收据打印机后，将打印一份简要的诊断报告。在此之后，您应该打印一份测试收据以确认一切正常。
步骤：
在 Shopify POS 中，点击 ≡，然后点击管理已连接的硬件。
点击要测试的打印机。
点击测试收据打印机。
Shopify商户官网原文详情：
Connect the printer cables
Two cables with slightly different connectors are supplied with a retail custom kit from Shopify. One cable connects the printer to the cash drawer, and the other connects the printer to your router. Take care to use the correct cable in each case.
Receipt printer to cash drawer:
Receipt printer to router:
Set a printer as the default for receipt printing
When you connect a printer, it's automatically set as the default printer for receipt printing. If the default printer is unavailable, then you can't print a receipt. If you have more than one printer, then you can change the default printer from Shopify POS.
Steps:
From Shopify POS, tap ≡, and then tap Manage connected hardware.
Under Receipt printers, tap the printer that you want to set as the default.
Enable the Default receipt printer option.
Print a test receipt
After you've set up your receipt printer, a brief diagnostic report prints. After this, you should print a test receipt to confirm that everything is working.
Steps:
From Shopify POS, tap ≡, and then tap Manage connected hardware.
Tap the printer that you want to test.
Tap Test receipt printer.
文章内容来源：Shopify商户官方网站
