34mm ExpressCard 2-Port RS232 to Dual DB9 COM RS-232 Expansion Card for Laptop (mcs7720 chipset)

Expand a laptop's connectivity with this 34mm ExpressCard that provides two RS232 serial interfaces. The card exposes dual DB9 COM (RS-232) ports and is built on the mcs7720 chipset to ensure stable, standard serial communication. Ideal for adding legacy RS-232 device support to systems that lack onboard COM ports.