Spec Sheet

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Figure 1.
Cisco Headset 521 and 522 and in-line USB adapter
Table 2. Features and benefits of Cisco Headset 521 and 522
Feature
Description
Power 3.5-mm connector
Enables flexible headset use with standard 3.5-mm jacks on laptops, tablets, and mobile
phones and connects headset LEDs to power when using an in-line USB headset adapter.
In-line USB adapter
The hand-held controller connects 3.5-mm headset to USB and provides easy access to
key call control capabilities, including answer call, end call, reject call, hold/resume
(for multiple calls), mute/unmute, volume up, and volume down.
Note: The Cisco Headset 521 and 522 terminate with a power 3.5-mm connector and include an in-line
USB adapter.
Figure 2.
Cisco Headset 531, 532, and desktop USB headset adapter