Does the usb follow rs232 wiring protocol? i’m hoping this eliminates buying 2 cables: rj12 to 9 pin and a 9 pin to usb with ftdi cable.

Tech answer: Not really. The driver interface of this chip does follow the RS232 Protocol however, the voltage read out is limited to +5V if your device uses true RS232 wiring then this device will not work. True RS232 wiring has a reversed(voltage shift) voltage that ranges from -15v to +15v (3V min register). In short, unless your device only needs RXD/TXD/GRD within 0 to +5V don't expect it to work.

Will this cable allow me to connect a headset with mic (Plantronics CO52) to my computer to?

no, it is a usb to RS232 serial adapter with rj12 interface. It only applies to data communication. Not used for audio transmission.

the title is labelled as 6p4c is it not 6p6c rj-12?

We confirm that this is the RJ12 interface cable. The RJ12 interface corresponds to a 6-core cable. But we only used 4 touch points of RJ12 interface . So that it can be compatible with 6P4C

Brand	DSD TECH
Connector Type	Usb
Cable Type	USB to RJ12
Compatible Devices	Personal Computer
Special Feature	outdoor-computer
Color	Black
Connector Gender	Male-to-Male
Shape	Round
Number of Pins	6
Unit Count	1 Count
Connectivity Technology	USB
Indoor/Outdoor Usage	Outdoor, Indoor
Number of Items	1
Package Type	FFP
Manufacturer	DSD TECH
UPC	734678382587
Item model number	SH-RJ12A
Item Weight	2.46 ounces
Product Dimensions	3.62 x 3.54 x 1.02 inches
Item Dimensions LxWxH	3.62 x 3.54 x 1.02 inches
ASIN	B07R2L22GW
Date First Available	April 21, 2019

Model:SH-RJ12A

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