請問一下,下面這兩章3com的無線網卡除價錢外有啥不同?

因為我搞了粉久還是霧煞煞.....><


我看規格上藍色的那塊是說當天線收入時會關閉網卡電源(Patented XJACK antenna with smart switch extends for excellent WLAN performance and conveniently retracts to activate power-save mode, preserve battery life, and protect the antenna)。
但綠色的那塊就沒有這樣寫了(Patented XJACK antenna extends for excellent wireless LAN performance, and retracts for safe travel and transport
),事實上綠色的也不會關閉電源。

不知有沒有人兩張都用過,可否分享一下心得?

感謝囉∼