Answer:2021 recommends the following three module interface cards, which I think are quite good, and I hope they can help you.1、CISCO WS-X6416-GBIC2、CISCO C7206VXR/400/2FE3、CISCO WS-X6348-RJ45
Answer:The 2021 module interface card is easy to use. I recommend the following three types. I think they are easy to use. I hope they can help you.1、H3C SFP-GE-LX-SM1310-A2、CISCO GLC-LH-SMD3、Finisar FTLX8571D3BCL
Answer:Look for it on some professional electronic market websites such as eBay or Alibaba International Station, but carefully screen the seller's reputation and evaluation