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4-Port USB to Serial Adapter COM Retention FTDI Chipset 920K Baud Rate

Product Review (submitted on June 21, 2015):
This quad-port USB to Serial adaptor is literally plug and play for Raspberry Pi 2 running Raspbian. I am using it with an open-source program "ser2net" so I can telnet into my lab Cisco routers and switches. Ports are labeled 1 through 4 and the adaptor maintains the same port order after a reboot so this is a major plus. I am very satisfied with this product.