、。
If you combine them like this, it becomes a 14-port USB hub.
Literal
This-way [manner-に] combine-[if-すれば], 14-port [genitive-の] USB hub [state-になります].
A tech instruction. こういう風に ('in this manner / like this') is a casual way of demonstrating. 合体する (がったいする, 'to combine / to merge') is used for physical joining of devices — also common in mecha anime for robot combinations. ~すれば is the ば conditional of する. ~になります ('it becomes') states the result. Full-width characters (１４ポート, ＵＳＢハブ) are typical of older Japanese web content.