聽說如果用一台比較簡單的主機來跑 Ubuntu 22.04 LTS 還是有幫助的說，ArchQ 那邊的聲音應該會更上一層樓，因此 CM4 配上某些擴展板的話大概是比一般樹莓派 4B 好一點吧？

可是 CM4 的炒價實在是令人卻步，不知道這些型號是否真的能夠於 5 月和 6 月內發貨呢？

https://tw.element14.com/raspberry-p...6gb/dp/3563481
https://tw.element14.com/raspberry-p...2gb/dp/3678909

其他 CM4 型號的發貨日期是 8 月或 9 月，但是到了最後仍然無法估計需要等到何年何月。


如此簡單的 CM4 擴展板只需 ¥100，連網路卡也沒有的說：

https://www.waveshare.com/cm4-nano-a.htm
https://www.waveshare.net/wiki/CM4-NANO-A
https://detail.tmall.com/item.htm?id=668082292877
https://item.taobao.com/item.htm?id=668104575517
https://item.taobao.com/item.htm?id=668393582682
https://item.taobao.com/item.htm?id=669467619233
https://detail.tmall.com/item.htm?id=674690657852
https://item.taobao.com/item.htm?id=674691717792
https://item.taobao.com/item.htm?id=675013830142
https://www.aliexpress.com/item/1005003988334822.html
https://www.aliexpress.com/item/1005003903768924.html
https://www.aliexpress.com/item/1005003908666784.html
https://www.aliexpress.com/item/1005003944610785.html
https://www.aliexpress.com/item/1005003950634645.html
https://www.aliexpress.com/item/1005003989937831.html
https://www.aliexpress.com/item/1005003993251336.html
https://www.aliexpress.com/item/1005004004873259.html
https://www.aliexpress.com/item/1005004008165937.html
https://www.aliexpress.com/item/1005004013367466.html
https://www.aliexpress.com/item/1005004018697908.html
https://www.aliexpress.com/item/1005004078610811.html
https://www.aliexpress.com/item/1005004104220025.html
https://www.aliexpress.com/item/1005004106473878.html
https://www.aliexpress.com/item/1005004106754640.html
https://www.aliexpress.com/item/1005004269862441.html

因此 USB 光纖網卡就大派用場了：

https://www.ptt.cc/bbs/Headphone/M.1...553.A.647.html
配置上就變成 普通大廠WIFI ROUTER→網路線→網路光纖盒→光纖線→USB光纖網卡

聲音走向就跟我想的類似 大方向就是整體聲音更乾淨 躁感降低

然後玩了幾種組合 不比較聲底 單純比較躁感 乾淨度的話

USB光纖網卡(走光纖>>走RJ45網路線)>USB網卡(5V外接>直上筆電)>筆電內建>筆電WIFI
100Mbps 的 SFP 超便宜：

https://item.taobao.com/item.htm?id=45756627215
https://item.taobao.com/item.htm?id=554323885238
https://item.taobao.com/item.htm?id=668179204761

USB 光纖網卡就是 ¥100 多一點：

https://item.taobao.com/item.htm?id=602369312720
https://detail.tmall.com/item.htm?id=632481099103
https://item.taobao.com/item.htm?id=634092449951
https://item.taobao.com/item.htm?id=639741989997
https://item.taobao.com/item.htm?id=652633186182


還有另一款具備雙網路卡的擴展板，盛惠 ¥145：

https://spotpear.com/index/product/detail/id/942.html
https://item.taobao.com/item.htm?id=666372452289
https://item.taobao.com/item.htm?id=667122902596
https://detail.tmall.com/item.htm?id=667123298775
https://www.aliexpress.com/item/1005003923021224.html