Plantronics has announced its end of life for the Blackwire 300 and 500 series USB headsets. Both monaural (single ear) and binaural (double ear) versions are being replaced with updated models.
Last shipment date will be October 1, or while supplies last. Please see below for replacement products.
Blackwire 3200 series replaces Blackwire 300 series:

C300 series EOL
The Plantronics Blackwire 3200 series of corded UC headsets are durable, comfortable, easy to deploy and come in a variety of connectivity and wearing options.
Blackwire 5200 series replaces Blackwire 500 series:

C500 series EOL
The Blackwire 5200 Series fits the busy workday. Easy to use, its USB-A/USB-C and 3.5 mm connectivity lets users work on a variety of devices. Ergonomically designed, it™s comfortable enough to wear all day, even on the longest calls. The Blackwire 5200 Series “ the power to connect and work easily is here.
Please note the new Blackwire 5200 does not include sensors like Blackwire 500 does. Please reach out to BTP if you have any questions.
Transition Information
Old Part Num | Old Description | Replacement Description | New Part Num |
85618-101 | BLACKWIRE C310-M | BLACKWIRE,C3210 USB-A | 209744-101 |
85618-102 | BLACKWIRE C310 | BLACKWIRE,C3210 USB-A | 209744-101 |
204440-101 | BLACKWIRE 315.1-M,MONO HEADSET | BLACKWIRE,C3215 USB-A | 209746-101 |
204440-102 | BLACKWIRE 315.1,MONO HEADSET | BLACKWIRE,C3215 USB-A | 209746-101 |
85619-101 | BLACKWIRE C320-M | BLACKWIRE,C3220 USB-A | 209745-101 |
85619-102 | BLACKWIRE C320 | BLACKWIRE,C3220 USB-A | 209745-101 |
204446-101 | BLACKWIRE 325.1-M,HEADSET | BLACKWIRE,C3225 USB-A | 209747-101 |
204446-102 | BLACKWIRE 325.1,STEREO HEADSET | BLACKWIRE,C3225 USB-A | 209747-101 |
88860-01 | BLACKWIRE C510 | BLACKWIRE 5210,C5210,USB-A,WW | 207577-01 |
88860-02 | BLACKWIRE C510-M | BLACKWIRE 5210,C5210,USB-A,WW | 207577-01 |
88861-01 | BLACKWIRE C520 | BLACKWIRE 5220,C5220,USB-A,WW | 207576-01 |
88861-02 | BLACKWIRE C520-M | BLACKWIRE 5220,C5220,USB-A,WW | 207576-01 |