Introduction
This manual provides comprehensive instructions for the Poly Blackwire 3315 headset. Designed for optimal audio quality and user comfort, this headset features a modern, stylish design with a flexible microphone boom and adjustable components. It offers versatile connectivity options, including 3.5mm and USB-C, making it suitable for various professional communication needs.
Package Contents
Verify that your package contains the following items:
- Poly Blackwire C3315-M Monaural Headset with USB-C/A and 3.5 mm connectors
Product Overview

Figure 1: Poly Blackwire 3315 Headset Components. This image displays the Poly Blackwire 3315 headset, featuring an on-ear design with an adjustable microphone boom. The headset is connected via a red cable to an in-line control unit, which then splits into a 3.5mm jack and a USB-C connector, illustrating its versatile connectivity.
Key Components:
- Headband: Padded for comfort, adjustable for various head sizes.
- Ear Cushion: Soft, on-ear design for extended wear.
- Microphone Boom: Flexible and adjustable for optimal voice pickup.
- In-line Control Unit: Provides easy access to call management, volume, and mute functions.
- 3.5mm Connector: For connecting to mobile devices or other compatible audio jacks.
- USB-C Connector: For connecting to computers or devices with a USB-C port.
Setup
Connecting the Headset:
- Identify Connection Type: Determine whether your device uses a 3.5mm audio jack or a USB-C port.
- Connect via 3.5mm: Plug the 3.5mm connector from the headset's in-line control unit directly into your device's 3.5mm audio jack.
- Connect via USB-C: Plug the USB-C connector from the headset's in-line control unit directly into your device's USB-C port.
- Adjust Fit: Place the headset on your head and adjust the headband for a comfortable fit. Position the microphone boom approximately two finger-widths from the corner of your mouth.
Operating Instructions
Using the In-line Control Unit:
- Volume Up (+): Press the '+' button to increase listening volume.
- Volume Down (-): Press the '-' button to decrease listening volume.
- Mute/Unmute Microphone: Press the microphone icon button to mute or unmute your microphone during a call.
- Answer/End Call: Press the call button (typically a phone icon) to answer an incoming call or end an active call.
For optimal performance, ensure your device's audio settings are configured to use the Poly Blackwire 3315 as the default input and output device.
Maintenance
Proper care ensures the longevity of your headset:
- Cleaning: Gently wipe the headset with a soft, dry cloth. Do not use liquid cleaners or immerse the headset in water.
- Storage: Store the headset in a cool, dry place when not in use. Avoid extreme temperatures.
- Cable Care: Avoid sharp bends or excessive pulling on the cables to prevent damage.
Troubleshooting
If you encounter issues with your headset, refer to the following common solutions:
| Problem | Solution |
|---|---|
| No audio from headset |
|
| Microphone not working |
|
| Poor audio quality |
|
Specifications
| Model Name | Blackwire 3315 |
| Brand | POLY |
| Connectivity Technology | Wired |
| Headphones Jack | 3.5 mm Jack |
| Input Device Interface | USB, 3.5 mm Jack |
| Earpiece Shape | On-Ear |
| Noise Control | Active Noise Cancellation (basic_noise_reduction) |
| Microphone | Included |
| Control Type | Touch Control (In-line) |
| Compatible Devices | Laptops, Desktops, Mobile Devices, Telephones |
| Item Weight | 0.22 Kilograms (7.7 ounces) |
| Product Dimensions | 7.09 x 1.97 x 8.27 inches |
| Material | Plastic |
| UPC | 197498429052 |
Warranty and Support
For warranty information and technical support, please refer to the official Poly website or contact their customer service. Keep your purchase receipt for warranty claims.
You can find more information and support resources by visiting the official Poly Store on Amazon.





